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Allegheny County, Pennsylvania
Not to be confused with Allegheny, Pennsylvania.
Allegheny County (/
ælɪˈɡeɪni
/) is located in the southwest of the U.S. state of Pennsylvania. As of 2019 the population was 1,216,045, making it the state's second-most populous county, following Philadelphia County. The county seat is Pittsburgh.[2] Allegheny County is included in the Pittsburgh, PA Metropolitan Statistical Area, and in the Pittsburgh Designated Market Area.
Allegheny County
U.S. county

Flag
Seal

Location within the U.S. state of Pennsylvania

Pennsylvania's location within the U.S.
Coordinates: 40°26′08″N 80°01′28″W
Country United States
State
 Pennsylvania
FoundedSeptember 24, 1788
Named forAllegheny River
SeatPittsburgh
Largest cityPittsburgh
Area
 • Total745 sq mi (1,930 km2)
 • Land730 sq mi (1,900 km2)
 • Water14 sq mi (40 km2)  1.9%%
Population
 • Estimate (2019)1,216,045
 • Density1,666/sq mi (643/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional districts17th, 18th
Website
www.alleghenycounty.us
DesignatedDecember 30, 1982[1]
Interactive map of Allegheny County, Pennsylvania
Allegheny was the first county in Pennsylvania to be given a Native American name. It was named after the Lenape word for the Allegheny River. The meaning of "Allegheny" is uncertain. It is usually said to mean "fine river". Stewart says that the name may come from a Lenape account of an ancient mythical tribe called "Allegewi", who lived along the river before being taken over by the Lenape.[3]
History
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Prior to European contact, this area was settled for thousands of years by succeeding cultures of indigenous peoples. During the colonial era, historic native groups known by the colonists to settle in the area included members of western nations of the Iroquois, such as the Seneca; the Lenape, who had been pushed from the East by European-American settlers; the Shawnee, who also had territory in Ohio; and the Mingo, a group made up of a variety of peoples from more eastern tribes.
European fur traders such as Peter Chartier established trading posts in the region in the early eighteenth century.
1680 British map of western Pennsylvania and Allegheny County from the Darlington Collection
In 1749, Captain Pierre Joseph Céloron de Blainville claimed the Ohio Valley and all of western Pennsylvania for King Louis XV of France. The captain traveled along the Ohio and Allegheny rivers. He installed lead plates in the ground to mark the land for France.
Most of the towns during that era were developed along waterways, which were the primary transportation routes, as well as providing water for domestic uses. Through the eighteenth century, both the French and the British competed for control over the local rivers in this frontier territory of North America. Native American bands and tribes allied with the colonists to differing degrees, often based on their trading relationships. The British sent Major George Washington to expel the French from their posts, with no success. He also nearly drowned in the ice-filled Allegheny River while returning to camp.
The English tried again in 1754 to establish a post in the area. They sent 41 Virginians to build Fort Prince George. The French learned of the plan and sent an army to capture the fort. They resumed building it and added increased defensive fortification, renaming it as Fort Duquesne.
Given its strategic location at the Ohio, Fort Duquesne became an important focal point of the French and Indian War. The first British attempt to retake the fort, the Braddock Expedition, failed miserably.[4] In 1758 British forces under General John Forbes recaptured the fort; he had it destroyed to prevent any use by the French. The British built a new, larger fort on the site, including a moat, and named it Fort Pitt. The historic site has been preserved as Pittsburgh's Point State Park.
Under their colonial charters, both Pennsylvania and Virginia claimed the region that is now Allegheny County. Pennsylvania administered most of the region as part of its Westmoreland County. Virginia considered everything south of the Ohio River and east of the Allegheny River to be part of its Yohogania County, and governed it from Fort Dunmore. In addition, parts of the county were located in the proposed British colony of Vandalia and the proposed U.S. state of Westsylvania. The overlapping boundaries, multiple governments, and confused deed claims soon proved unworkable. Near the end of the American Revolutionary War, in 1780 Pennsylvania and Virginia agreed to extend the Mason–Dixon line westward. This region was assigned to Pennsylvania. From 1781 until 1788, much of what Virginia had claimed as part of Yohogania County was administered as a part of the newly created Washington County, Pennsylvania.
Allegheny County was officially created on September 24, 1788, from parts of Washington and Westmoreland counties. It was formed to respond to pressure from the increase in settlers living in the area around Pittsburgh; this was designated as the county seat in 1791. The county originally extended north to the shores of Lake Erie; it was reduced to its current borders by 1800. As population increased in the territory, other counties were organized.
The Allegheny County Courthouse
In the 1790s, the United States federal government imposed a whiskey excise tax. Farmers who had depended on whiskey income refused to pay and started the so-called Whiskey Rebellion after driving off tax collector John Neville. After a series of demonstrations by farmers, President George Washington sent troops to suppress the frontier rebellion.
The area developed rapidly through the 1800s with industrialization. It became the nation's prime steel producer by the late 19th century and Pittsburgh was nicknamed "Steel Capital of the World".
In 1913 the county's 125th anniversary was celebrated with a week-long series of events. The final day, September 27, was marked by a steamboat parade of 30 paddle wheelers. They traveled from Monongahela Wharf down the Ohio to the Davis Island Dam. The boats in line were the Steel City (formerly the Pittsburgh and Cincinnati packet Virginia), the flag ship; City of Parkersburg, Charles Brown, Alice Brown, Exporter, Sam Brown, Boaz, Raymond Horner, Swan, Sunshine, I. C. Woodward, Cruiser, Volunteer, A. R. Budd, J. C. Risher, Clyde, Rival, Voyager, Jim Brown, Rover, Charlie Clarke, Robt. J. Jenkins, Slipper, Bertha, Midland Sam Barnum, Cadet, Twilight, and Troubadour.[5]
Geography
According to the U.S. Census Bureau, the county has a total area of 745 square miles (1,930 km2), of which 730 square miles (1,900 km2) is land and 14 square miles (36 km2) (1.9%) is water.[6]
Three major rivers traverse Allegheny County: the Allegheny River and the Monongahela River converge at Downtown Pittsburgh to form the Ohio River. The Youghiogheny River flows into the Monongahela River at McKeesport, 10 miles (16 km) to the southeast. There are several islands in these courses. The rivers drain via the Mississippi River into the Gulf of Mexico. Although the county's industrial growth resulted in clearcutting of the area's forests at one time, there has been regrowth and a significant woodland remains.
Adjacent counties
Major roads and highways
Climate
Allegheny has a humid continental climate which is hot-summer (Dfa) except in higher areas where it is warm-summer (Dfb).
Climate data for Pittsburgh (Pittsburgh International Airport), 1981–2010 normals,[a] extremes 1871–present[b]
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Record high °F (°C)75
(24)
78
(26)
84
(29)
90
(32)
95
(35)
98
(37)
103
(39)
103
(39)
102
(39)
91
(33)
82
(28)
74
(23)
103
(39)
Mean maximum °F (°C)59.7
(15.4)
61.9
(16.6)
74.9
(23.8)
81.5
(27.5)
85.7
(29.8)
90.0
(32.2)
91.3
(32.9)
90.5
(32.5)
87.2
(30.7)
79.0
(26.1)
71.5
(21.9)
61.3
(16.3)
92.7
(33.7)
Average high °F (°C)35.7
(2.1)
39.3
(4.1)
49.2
(9.6)
61.7
(16.5)
70.8
(21.6)
79.1
(26.2)
82.5
(28.1)
81.4
(27.4)
74.3
(23.5)
62.6
(17.0)
51.2
(10.7)
39.4
(4.1)
60.7
(15.9)
Average low °F (°C)21.1
(−6.1)
23.0
(−5.0)
30.0
(−1.1)
40.2
(4.6)
49.3
(9.6)
58.4
(14.7)
62.8
(17.1)
61.5
(16.4)
54.0
(12.2)
42.9
(6.1)
34.7
(1.5)
25.3
(−3.7)
42.0
(5.6)
Mean minimum °F (°C)−0.1
(−17.8)
3.6
(−15.8)
10.9
(−11.7)
24.6
(−4.1)
34.8
(1.6)
44.1
(6.7)
50.7
(10.4)
49.6
(9.8)
39.3
(4.1)
29.0
(−1.7)
18.9
(−7.3)
6.7
(−14.1)
−3.9
(−19.9)
Record low °F (°C)−22
(−30)
−20
(−29)
−5
(−21)
11
(−12)
26
(−3)
34
(1)
42
(6)
39
(4)
31
(−1)
16
(−9)
−1
(−18)
−12
(−24)
−22
(−30)
Average precipitation inches (mm)2.70
(69)
2.39
(61)
2.95
(75)
3.11
(79)
3.95
(100)
4.30
(109)
3.83
(97)
3.48
(88)
3.11
(79)
2.29
(58)
3.23
(82)
2.85
(72)
38.19
(970)
Average snowfall inches (cm)11.5
(29)
10.2
(26)
7.4
(19)
1.5
(3.8)
0
(0)
0
(0)
0
(0)
0
(0)
0
(0)
0.4
(1.0)
2.1
(5.3)
8.3
(21)
41.4
(105)
Average precipitation days (≥ 0.01 in)16.213.614.013.813.312.110.29.89.810.512.815.1151.2
Average snowy days (≥ 0.1 in)11.48.35.92.0000000.33.08.539.4
Average relative humidity (%)69.967.364.159.863.466.268.871.272.068.370.271.967.8
Average dew point °F (°C)17.2
(−8.2)
18.9
(−7.3)
26.8
(−2.9)
34.5
(1.4)
45.9
(7.7)
55.2
(12.9)
60.1
(15.6)
59.5
(15.3)
53.4
(11.9)
40.8
(4.9)
32.4
(0.2)
23.2
(−4.9)
39.0
(3.9)
Mean monthly sunshine hours93.9108.5155.4182.8217.4242.2254.9228.4196.7167.399.474.42,021.3
Percent possible sunshine31364246495456545348332645
Average ultraviolet index2346899864225
Source 1: NOAA (relative humidity, dew point and sun 1961–1990)[7][8][9][10]
Source 2: Weather Atlas [11]
Law and government
Until January 1, 2000, Allegheny County's government was defined under Pennsylvania's Second Class County Code. The county government was charged with all local activities, including elections, prisons, airports, public health, and city planning. All public offices were headed by elected citizens. There were three elected county commissioners.
On January 1, 2000, the Home-Rule Charter went into effect. It replaced the three elected commissioners with an elected chief officer (the County Executive), a county council with 15 members (13 elected by district, two elected county-wide), and an appointed county manager. The changes were intended to maintain a separation of powers between the executive and legislative branches while providing greater citizen control.
County Medical Examiner office
The county has 130 self-governing municipalities, the most in the state.[12] (Luzerne is second with 76).[13] The county has one Second Class City (Pittsburgh) and three Third Class Cities (Clairton, Duquesne, and McKeesport).
A 2004 study found the county would be better served by consolidating the southeastern portion of the county (which includes many small communities with modest economies) into a large municipality ("Rivers City") with a combined population of approximately 250,000.[14]
State relations
Under the Onorato administration, Allegheny County paid $10,000 per month to Robert Ewanco, of Greenlee Partners, to lobby the Pennsylvania General Assembly.[15][16] County officials credit him with a "20-fold" return in the form of appropriations for a widening project on Pennsylvania Route 28, as well as a footbridge and security cameras at Duquesne University.[16]
County Executive
Rich Fitzgerald, Democrat
County Council
Other elected county offices
Politics
United States presidential election results for Allegheny County, Pennsylvania[17]
YearRepublicanDemocraticThird party
No. %No. %No. %
2020282,91339.03%430,75959.43%11,1281.54%
2016259,48039.48%367,61755.94%30,0924.58%
2012262,03942.01%352,68756.54%9,1011.46%
2008272,34741.64%373,15357.05%8,5391.31%
2004271,92542.13%368,91257.15%4,6320.72%
2000235,36140.41%329,96356.65%17,1542.95%
1996204,06737.89%284,48052.82%50,0689.30%
1992183,03529.80%324,00452.75%107,14817.45%
1988231,13739.43%348,81459.51%6,2001.06%
1984284,69242.76%372,57655.96%8,4801.27%
1980271,85043.75%297,46447.87%52,1048.38%
1976303,12746.79%328,34350.68%16,3872.53%
1972371,73755.60%282,49642.26%14,3022.14%
1968264,79037.09%364,90651.12%84,12111.78%
1964241,70733.58%475,20766.03%2,8110.39%
1960320,97042.76%428,45557.07%1,2930.17%
1956384,93954.83%315,98945.01%1,1020.16%
1952359,22449.00%370,94550.60%2,9030.40%
1948253,27242.60%326,30354.89%14,9312.51%
1944261,21842.52%350,69057.09%2,3930.39%
1940263,28541.51%367,92658.01%2,9870.47%
1936176,22431.35%366,59365.21%19,3773.45%
1932152,32642.43%189,83952.88%16,8384.69%
1928215,62656.86%160,73342.39%2,8500.75%
1924149,29659.01%21,9848.69%81,73332.30%
1920138,90869.21%40,27820.07%21,53010.73%
191677,48355.24%52,83337.67%9,9487.09%
191223,82218.85%31,41724.86%71,14756.29%
190874,08060.77%35,65529.25%12,1709.98%
190490,59476.51%21,54118.19%6,2705.30%
190071,78069.94%27,31126.61%3,5333.44%
189676,69170.90%29,80927.56%1,6741.55%
189245,78858.33%30,86739.32%1,8492.36%
188845,11863.58%24,71034.82%1,1381.60%
188437,86561.96%19,46931.86%3,7746.18%
188035,53959.85%22,09637.21%1,7472.94%


As of April 27, 2020, there were 895,158 registered voters in the county; a majority were Democrats. There were 521,327 registered Democrats, 249,831 registered Republicans, 79,490 voters registered as No Affiliation Voters and 44,510 registered to other parties.[18]
Chart of Voter Registration
  Democratic (58.24%)
  Republican (27.91%)
  NPA (8.88%)
  Other Parties (4.97%)
Voter registration and party enrollment
PartyNumber of votersPercentage
Democratic521,32758.24
Republican249,83127.91
Others79,4908.88
Other Parties44,5104.97
Total895,158100.0
The Republican Party had been historically dominant in county-level politics in the 19th and early 20th centuries; prior to the Great Depression, Pittsburgh and Allegheny County had been majority Republican. Since the Great Depression on the state and national levels, the Democratic Party has been dominant in county-level politics and is the Democratic stronghold of western Pennsylvania. In 2000, Democrat Al Gore won 56% of the vote and Republican George W. Bush won 41%. In 2004, Democrat John Kerry received 57% of the vote and Republican Bush received 42%. In 2006, Democrats Governor Ed Rendell and Senator Bob Casey, Jr. won 59% and 65% of the vote in Allegheny County, respectively. In 2008, Democrat Barack Obama received 57% of the vote, John McCain received 41%, and each of the three state row office winners (Rob McCord for Treasurer, Jack Wagner for Auditor General, and Tom Corbett for Attorney General) also carried Allegheny. In 2016, despite Donald Trump being the first Republican to carry Pennsylvania since 1988, Hillary Clinton did slightly better than Barack Obama's 2012 vote total while Donald Trump was the worst performing Republican in 20 years. In the 2018 Midterms, Democrats received an even higher percentage of the vote with Tom Wolf and Bob Casey receiving approximately two thirds of the county's vote.[19][20] This is an improvement over the approximately 55% each person received in the county in their last election in 2014 and 2012 respectively.
State representatives
State senators
U.S. representatives
Religion
In 2010 statistics, the largest religious group in Allegheny County was the Diocese of Pittsburgh, with 460,672 Catholics worshipping at 179 parishes, followed by 44,204 UMC Methodists with 100 congregations, 42,838 PC-USA Presbyterians with 145 congregations, 33,103 non-denominational adherents with 85 congregations, 24,718 ELCA Lutherans with 77 congregations, 17,148 ABCUSA Baptists with 42 congregations, 12,398 AoG Pentecostals with 30 congregations, 8,483 Reform Jews with 6 congregations, 7,780 TEC Episcopalians with 19 congregations, and 6,700 Hindus with two temples. Altogether, 60.6% of the population was claimed as members by religious congregations, although members of historically African-American denominations were underrepresented due to incomplete information.[21] In 2014, Allegheny County had 794 religious organizations, the 11th most out of all US counties.[22]
Demographics
Historical population
CensusPop.
179010,203
180015,08747.9%
181025,31767.8%
182034,92137.9%
183050,55244.8%
184081,23560.7%
1850138,29070.2%
1860178,83129.3%
1870262,20446.6%
1880355,86935.7%
1890551,95955.1%
1900775,05840.4%
19101,018,46331.4%
19201,185,80816.4%
19301,374,41015.9%
19401,411,5392.7%
19501,515,2377.3%
19601,628,5877.5%
19701,605,016−1.4%
19801,450,085−9.7%
19901,336,449−7.8%
20001,281,666−4.1%
20101,223,348−4.6%
2019 (est.)1,216,045[23]−0.6%
U.S. Decennial Census[24]
1790–1960[25] 1900–1990[26]
1990–2000[27] 2010–2018[28]
As of the 2010 census, there were 1,223,348 people living in the county. The population density was 1676 people per square mile (647/km2). The racial makeup of the county was 82.87% White, 14.39% Black or African American, 2.94% Asian, 0.03% Pacific Islander, 0.37% from other races, and 1.40% from two or more races. About 1.31% of the population were Hispanic or Latino of any race.
At the census[29] of 2000, there were 1,281,666 people, 537,150 households, and 332,495 families living in the county. The population density was 1,755 people per square mile (678/km2). There were 583,646 housing units at an average density of 799 per square mile (309/km2). The racial makeup of the county was 84.33% White, 12.41% Black or African American, 0.12% Native American, 1.69% Asian, 0.03% Pacific Islander, 0.34% from other races, and 1.07% from two or more races. About 0.87% of the population were Hispanic or Latino of any race. 20.0% were of German, 15.0% Italian, 12.7% Irish, 7.5% Polish and 5.1% English ancestry according to Census 2000. 93.5% spoke English and 1.3% Spanish as their first language.
There were 537,150 households, out of which 26.40% had children under the age of 18 living with them, 46.10% were married couples living together, 12.40% had a female householder with no husband present, and 38.10% were non-families. Some 32.70% of all households were made up of individuals, and 13.20% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.96.
The age distribution of the population shows 21.90% under the age of 18, 8.50% from 18 to 24, 28.30% from 25 to 44, 23.40% from 45 to 64, and 17.80% who were 65 years of age or older. The median age was 40. For every 100 females, there were 90.00 males; for every 100 females age 18 and over, there were 86.20 males.
Economy
See also: Economy of Pittsburgh
In the late 18th century farming played a critical role in the growth of the area. There was a surplus of grain due to transportation difficulties in linking with the eastern portion of the state. As a result, the farmers distilled the grain into whiskey, which significantly helped the farmers financially.
Employment by occupation in Allegheny County
The area quickly became a key manufacturing area in the young nation. Coupled with deposits of iron and coal, and the easy access to waterways for barge traffic, the city quickly became one of the most important steel producing areas in the world. Based on 2007 data from the US Army Corps of Engineers, Pittsburgh is the second (after Laredo, Texas) busiest inland port in the nation.
US steel production declined late in the 20th century, and Allegheny County's economy began a shift to other industries. It is presently known for its hospitals, universities, and industrial centers. Despite the decline of heavy industry, Pittsburgh is home to a number of major companies and is ranked in the top ten among US cities hosting headquarters of Fortune 500 corporations, including U.S. Steel Corporation, PNC Financial Services Group, PPG Industries, and H. J. Heinz Company.
The county leads the state in number of defense contractors supplying the U.S. military.[30]
Regions
Education
Colleges and universities
Community, junior and technical colleges
Public school districts
Map of Allegheny County, Pennsylvania Public School Districts
Approved private schools
The Commonwealth of Pennsylvania has 36 Approved Private Schools including the Charter Schools for the Blind and Deaf. The private schools are licensed by the State Board of Private Academic Schools. They provide a free appropriate special education for students with severe disabilities. The cost of tuition for these schools is paid 60% by the state and 40% by the local school district where the student is a resident. Pennsylvania currently has four PA chartered and 30 non-charter APSs for which the Department approves funding. These schools provide a program of special education for over 4,000 day and residential students. Parents are not charged for the services at the school.[31] In 2009, the Pennsylvania Department of Education budgeted $98 million for the tuition of children in approved private schools and $36.8 million for students attending the charter schools for the deaf and blind.[32] The majority of these schools are located in the southeastern region and southwestern region of Pennsylvania.
Private high schools
21st Century Community Learning Centers
These are state-designated before- and after-school program providers. They receive state funding through grants. CCLCs provide academic, artistic and cultural enhancement activities to students and their families when school is not in session.[33]
Transportation
Allegheny County's public transportation provider is the Port Authority of Allegheny County. The Allegheny County Department of Public Works oversees infrastructure, maintenance, and engineering services in the county.
The Three Rivers Heritage Trail provides uninterrupted bicycle and pedestrian connections along the three rivers in the city, and the Great Allegheny Passage trail runs from downtown Pittsburgh to Washington, D.C.
The Allegheny County Airport is the original airport for Pittsburgh and houses a number of flight schools, charter flight operations, and medevac operations.
Major roadways
For information about major state roads, see list of State Routes in Allegheny County, Pennsylvania and Allegheny County Belt System.
Parks and recreation
There are two Pennsylvania state parks in Allegheny County. Point State Park is at the confluence of the Allegheny and Monongahela rivers in Downtown Pittsburgh, and Allegheny Islands State Park is in the Allegheny River in Harmar Township and is undeveloped as of August 2010.
Pennsylvania State Game Lands Number 203 is also located in Allegheny County providing hunting and other activities.
Sports
Communities
Map of Allegheny County, Pennsylvania, with municipal labels showing cities and boroughs (red), Townships (white), and census-designated places (blue)
Under Pennsylvania law, there are four types of incorporated municipalities: cities, boroughs, townships, and (in one case) a town. The following municipalities are in Allegheny County:
Cities
Boroughs
Townships
Census-designated places
Census-designated places are geographical areas designated by the US Census Bureau for the purposes of compiling demographic data. They are not actual jurisdictions under Pennsylvania law. Other unincorporated communities, such as villages, may be listed here as well.
Unincorporated communities
Former places
Many political subdivisions of Allegheny County have come and gone through subdivision or annexation through the years. These include:
Population ranking
The population ranking of the following table is based on the 2010 census of Allegheny County.[39]
county seat
RankCity/Town/etc.Population (2010 Census)Municipal typeIncorporated
1Pittsburgh305,704City1794 (borough) 1816 (city)
2Penn Hills42,329Municipality1851 (Penn Twp.) 1958 (Penn Hills Twp.) 1976 (municipality)
3Mt. Lebanon33,137Municipality1912 (township) 1975 (municipality)
4Bethel Park32,313Municipality1949 (borough) 1978 (municipality)
5Ross31,105Municipality1809
6Monroeville28,386Municipality1951
7Plum27,126Borough1788 (township) 1956 (borough)
8Allison Park21,552CDP
9West Mifflin20,313Borough1942
10Baldwin19,767Borough1950
11McKeesport19,731City1842 (borough) 1891 (city)
12Wilkinsburg15,930Borough1871 (Sterrett Twp.) 1887 (borough)
13Whitehall13,944Borough1948
14Franklin Park13,470Borough
15Munhall11,406Borough
16Carnot-Moon11,372CDP
17Jefferson Hills10,619Borough
18Brentwood9,643Borough1916
19Swissvale8,983Borough
20Glenshaw8,981CDP
21Dormont8,593Borough1909
22Bellevue8,370Borough1867
23Castle Shannon8,316Borough1919
24Pleasant Hills8,268Borough
25Carnegie7,972Borough1894
26White Oak7,862Borough
27Clairton6,796City1903 (borough) 1922 (city)
28West View6,771Borough
29Forest Hills6,518Borough1919
30Oakmont6,303Borough1889
31McKees Rocks6,104Borough1892
32Crafton5,951Borough
33Coraopolis5,677Borough1886
34Duquesne5,565City1891 (borough) 1918 (city)
35Fox Chapel5,388Borough
36Turtle Creek5,349Borough
37Bridgeville5,148Borough1901
38North Braddock4,857Borough
39Avalon4,705Borough1874
40Tarentum4,530Borough1842
41Glassport4,483Borough
42Green Tree4,432Borough1885
43Sewickley3,827Borough
44Port Vue3,798Borough
45Millvale3,744Borough
46Pitcairn3,689Borough
47Etna3,451Borough
48Sharpsburg3,446Borough
49Springdale3,405Borough
50Mount Oliver3,403Borough
51Ingram3,330Borough
52Brackenridge3,260Borough1901
53Trafford (mostly in Westmoreland County)3,174Borough1904
54Homestead3,165Borough
55Edgewood3,118Borough1888
56Churchill3,011Borough
57Aspinwall2,801Borough1892
58Gibsonia2,733CDP
59Liberty2,551Borough
60Imperial2,541CDP
61Verona2,474Borough1871
62Emsworth2,449Borough
63Greenock2,195CDP
64Wilmerding2,190Borough
65Braddock2,159Borough1867
66McDonald (mostly in Washington County)2,149Borough1889
67East McKeesport2,126Borough
68Rankin2,122Borough
69West Homestead1,929Borough
70Braddock Hills1,880Borough1946
71East Pittsburgh1,822Borough
72Dravosburg1,792Borough
73Ben Avon1,781Borough1891
74Bakerstown1,761CDP
75Cheswick1,746Borough
76Sturgeon1,710CDP
77Edgeworth1,680Borough
78Versailles1,515Borough
79Elizabeth1,493Borough
80Oakdale1,459Borough
81Russellton1,440CDP
82Blawnox1,432Borough1925
83Bell Acres1,388Borough1960
84Whitaker1,271Borough
85Heidelberg1,244Borough
86Leetsdale1,218Borough
87Bradford Woods1,171Borough1915
88Rennerdale1,150CDP
89Lincoln1,072Borough
90Curtisville1,064CDP
91Enlow1,013CDP
92Harwick899CDP
93Sewickley Heights810Borough
94Chalfant800Borough
95Bairdford698CDP
96Pennsbury Village661Borough
97Sewickley Hills639Borough
98Wall580Borough
99Noblestown575CDP
100Glen Osborne547Borough
101Boston545CDP
102West Elizabeth518Borough
103Thornburg455Borough
104Clinton434CDP
105Rosslyn Farms427Borough
106Ben Avon Heights371Borough1913
107Glenfield205Borough
108Haysville70Borough
See also
Notes
  1. ^ Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1981 to 2010.
  2. ^ Records kept January 1871 to June 1935 at the Weather Bureau Office across the Allegheny River from downtown, at Allegheny County Airport from July 1935 to 14 September 1952, and at Pittsburgh Int'l (KPIT) since 15 September 1952. Due to its river valley and urban location as well as elevation, many of the summertime warm minima temperature records set at the WBO have not even come close to being matched at KPIT, which is at-elevation and located in the western suburbs. For more information, see Threadex
References
  1. ^ "PHMC Historical Markers Search"(Searchable database). Pennsylvania Historical and Museum Commission. Commonwealth of Pennsylvania. Retrieved January 25, 2014.
  2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  3. ^ Stewart, George R. (1967) [1945]. Names on the Land: A Historical Account of Place-Naming in the United States (Sentry edition (3rd) ed.). Houghton Mifflin. pp. 8, 193. ISBN 1-59017-273-6.
  4. ^ Fiske, John (1902). New France and New England, pp. 290–92. Houghton Mifflin Company.
  5. ^ Kussart, Mrs. S. (April 24, 1930). "Navigation on the Monongahela River". The Daily Republican (Monongahela, Pennsylvania). p. 3. Retrieved August 10, 2018.
  6. ^ "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Retrieved March 4, 2015.
  7. ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved February 21, 2018.
  8. ^ "Station Name: PA PITTSBURGH INTL AP". National Oceanic and Atmospheric Administration. Retrieved July 19, 2020.
  9. ^ "WMO Climate Normals for PITTSBURGH/GR PITTSBURGH INTL,PA 1961–1990". National Oceanic and Atmospheric Administration. Retrieved July 19, 2020.
  10. ^ "Average Percent Sunshine through 2009". National Climatic Data Center. Retrieved November 15, 2012.
  11. ^ "Pittsburgh, Pennsylvania, USA - Monthly weather forecast and Climate data". Weather Atlas. Retrieved July 4, 2019.
  12. ^ "City of Pittsburgh - Allegheny County Quest". alleghenycounty.wikidot.com​. Retrieved April 28, 2019.
  13. ^ "Pennsylvania Municipalities Information". Pamunicipalitiesinfo.com​. Retrieved August 16, 2012.
  14. ^ Cohan, Jeffrey (June 20, 2004). "Can 39 towns be turned into one?". Pittsburgh Post-Gazette. Retrieved August 16, 2012.
  15. ^ "Lobbyist Profile – Ewanco, Robert J."Pennsylvania Lobbyist Database. Pennsylvania General Assembly. Archived from the original(database) on August 21, 2007.
  16. ^ a b Bumsted, Brad; Mike Wereschagin (November 29, 2009). "Lobbyist expenses wasteful, critics say". Pittsburgh Tribune Review. Archived from the original on November 30, 2009.
  17. ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org.
  18. ^ "2020 Voter Registration Statistics" (Excel). www.dos.pa.gov. April 27, 2017. Retrieved May 3, 2020.
  19. ^ "Pennsylvania Elections - Summary Results". electionreturns.pa.gov.
  20. ^ "2018 General Election Official Returns". Pennsylvania Department of State. November 6, 2018. Retrieved October 3, 2019.
  21. ^ "County Membership Report Allegheny County (Pennsylvania)". The Association of Religion Data Archives. 2010. Retrieved January 2, 2020.
  22. ^ "Social Capital Variables Spreadsheet for 2014". PennState College of Agricultural Sciences, Northeast Regional Center for Rural Development. December 8, 2017. Retrieved December 30, 2019.
  23. ^ "Population and Housing Unit Estimates". Retrieved June 9, 2017.
  24. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved March 4, 2015.
  25. ^ "Historical Census Browser". University of Virginia Library. Retrieved March 4, 2015.
  26. ^ Forstall, Richard L., ed. (March 27, 1995). "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved March 4, 2015.
  27. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. April 2, 2001. Retrieved March 4, 2015.
  28. ^ "State & County QuickFacts". United States Census Bureau. Archived from the original on July 3, 2011. Retrieved November 16, 2013.
  29. ^ "U.S. Census website". United States Census Bureau. Retrieved January 31, 2008.
  30. ^ "Automatic defense cuts would affect some contractors in Pittsburgh region". Pittsburgh Post-Gazette. July 3, 2012. Retrieved August 16, 2012.
  31. ^ Approved Private Schools and Chartered Schools for the Deaf and the Blind, Pennsylvania Department of Education website, accessed April 2010.
  32. ^ Tommasini, John, Assistant Secretary of Education, Testimony before the Pennsylvania Senate Education Committee Hearing on SB982 of 2010. given April 14, 2010.
  33. ^ Pennsylvania Awards $29.9 Million to Support 21st Century Community Learning Centers, Pennsylvania Department of Education Press Release, April 7, 2010,
  34. ^ a b c d e f Schmitz, Jon (July 23, 2012). "Kirwan Heights loses Interstate 79 designation". Pittsburgh Post-Gazette. Retrieved May 15, 2016.
  35. ^ "Profile: Cuddy, Pennsylvania". Mapquest. Retrieved May 15, 2016.
  36. ^ "Profile: Sheraden, Pennsylvania". U.S. Geological Survey. Retrieved May 15, 2016.
  37. ^ 1860 United States Federal Census - Chartier Township, accessed April 2018 via ancestry.com paid subscription site.
  38. ^ "Mifflin Township Historical Society Attraction Details". ExplorePAhistory.com.
  39. ^ Center for New Media and Promotions(C2PO). "2010 Census". United States Census Bureau.
External links
Wikivoyage has a travel guide for Allegheny County.
Wikimedia Commons has media related to Allegheny County, Pennsylvania.
Last edited on 6 May 2021, at 12:31
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