Histopolis
Collaborative Genealogy & History
Register
Log in
Home
People
Surnames
Graves
Places
World
United States
Puerto Rico
Cemeteries
Graves
Surveys
Place-of-the-Day
Learn
Place Hierarchy
Place Navigation Bar
Grave Index
Histopolis
Link To Us
Privacy Policy
Credits
Donate
Account
Register
Login
Manage
Help
Place:
Loading ...
United States
Loading ...
Pennsylvania
Loading ...
Allegheny County
Loading ...
Allegheny County
,
Pennsylvania
,
United States
Overview
Map
Townships
Cities
Cemeteries
Graves
Links
Link Here
Tip: To see additional information about Allegheny County, click on the "tabs" directly above.
Overview of Allegheny County
Name:
Allegheny County
Place Type:
County
Located In:
Pennsylvania
,
United States
History (GNIS):
Formed in 1788 from parts of Washington and Westmoreland counties and named for the Allegheny River.
County Seat:
Pittsburgh
Coordinates:
Latitude:
40.6253449
40° 37' 31.2"
N
Longitude:
-80.1250588
80° 07' 30.2"
W
Population:
1,336,449
Elevation:
293 m
Surrounding Counties:
Butler
N
Armstrong
NE
Westmoreland
E
Fayette
SE
Washington
SW
Beaver
NW
Histopolis Place ID:
380580133
Updated May 7, 2020