County
· Pennsylvania
Allegheny County
Allegheny County is a large urban county in Pennsylvania, United States. As of the 2025 census estimate, the population was 1,225,035, a 2% decrease of 25,543 residents since 2020, making it the state's second-most populous county, after Philadelphia County. Its county seat and most populous city is Pittsburgh, Pennsylvania's second most populous city. The county is part of the Greater Pittsburgh region of the commonwealth, and is the center of the Pittsburgh media market.
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Cities and towns 86
- Borough of Oakdale pop. 1,464
- Borough of Oakmont pop. 6,749
- Borough of Pennsbury Village pop. 668
- Borough of Pitcairn pop. 3,059
- Borough of Pleasant Hills pop. 8,382
- Borough of Plum pop. 26,877
- Borough of Port Vue pop. 3,655
- Borough of Rankin pop. 1,864
- Borough of Rosslyn Farms pop. 435
- Borough of Sewickley pop. 3,854
- Borough of Sewickley Heights pop. 843
- Borough of Sewickley Hills pop. 692
- Borough of Sharpsburg pop. 3,138
- Borough of Springdale pop. 3,349
- Borough of Swissvale pop. 8,490
- Borough of Tarentum pop. 4,286
- Borough of Thornburg pop. 461
- Borough of Turtle Creek pop. 5,046
- Borough of Verona pop. 2,452
- Borough of Versailles pop. 1,458
- Borough of Wall pop. 509
- Borough of West Elizabeth pop. 397
- Borough of West Homestead pop. 1,843
- Borough of West Mifflin pop. 19,332
- Borough of West View pop. 6,586
- Borough of Whitaker pop. 1,166
- Borough of White Oak pop. 7,523
- Borough of Whitehall pop. 14,902
- Borough of Wilkinsburg pop. 14,140
- Borough of Wilmerding pop. 1,758
- City of Clairton pop. 6,093
- City of Duquesne pop. 5,191
- City of Mckeesport pop. 17,493
- City of Pittsburgh pop. 300,431
- Municipality of Bethel Park pop. 33,110
- Municipality of Monroeville pop. 28,334
Townships 42
- Township of Aleppo pop. 1,806
- Township of Baldwin pop. 1,954
- Township of Collier pop. 8,937
- Township of Crescent pop. 2,461
- Township of East Deer pop. 1,468
- Township of Elizabeth pop. 12,792
- Township of Fawn pop. 2,165
- Township of Findlay pop. 6,457
- Township of Forward pop. 3,023
- Township of Frazer pop. 1,147
- Township of Hampton pop. 18,273
- Township of Harmar pop. 3,094
- Township of Harrison pop. 10,021
- Township of Indiana pop. 7,267
- Township of Kennedy pop. 8,604
- Township of Kilbuck pop. 763
- Township of Leet pop. 1,598
- Township of Marshall pop. 10,217
- Township of Mccandless pop. 29,322
- Township of Moon pop. 26,956
- Township of Mount Lebanon pop. 33,586
- Township of Neville pop. 1,091
- Township of North Fayette pop. 16,120
- Township of North Versailles pop. 9,931
- Township of O Hara pop. 9,162
- Township of Ohio pop. 7,137
- Township of Penn Hills pop. 40,558
- Township of Pine pop. 15,018
- Township of Reserve pop. 3,204
- Township of Richland pop. 11,779
- Township of Robinson pop. 15,447
- Township of Ross pop. 33,176
- Township of Scott pop. 17,405
- Township of Shaler pop. 27,737
- Township of South Fayette pop. 18,407
- Township of South Park pop. 13,705
- Township of South Versailles pop. 308
- Township of Springdale pop. 1,513
- Township of Stowe pop. 6,334
- Township of Upper St Clair pop. 20,935
- Township of West Deer pop. 12,240
- Township of Wilkins pop. 6,259
Reference data (Census of Governments 2022)
- Census ID (PID6)
- 193970
- FIPS state
- 42
- FIPS county
- 003
- FIPS place
- 99003
- Census record name
- COUNTY OF ALLEGHENY
- Mailing address
- RM 101 ALLEGHENY COUNTY COURTHOUSE, PITTSBURGH 15219