Map of West Mifflin borough

West Mifflin is a borough in Allegheny County, Pennsylvania, United States, located southeast of downtown Pittsburgh. The population was 19,589 at the 2020 census. It is named after Thomas Mifflin, 1st Governor of Pennsylvania, signer of the United States Constitution, and 1st Quartermaster General of the United States Army.

Although the borough is heavily residential, it is home to one of America’s oldest traditional amusement parks, Kennywood Park. Other employers include advanced naval nuclear propulsion technology research and development facility, Bettis Atomic Power Laboratory; monorail manufacturer Bombardier; US Steel’s Mon Valley Works–Irvin Plant; Community College of Allegheny County’s South Campus; and the Allegheny County Airport.

West Mifflin borough overview:
Name:	West Mifflin borough
LSAD Code:	21
LSAD Description:	borough (suffix)
State:	Pennsylvania
County:	Allegheny County
Incorporated:	1788 (Mifflin Township)
Total Area:	14.50 sq mi (37.56 km²)
Land Area:	14.21 sq mi (36.79 km²)
Water Area:	0.29 sq mi (0.76 km²) 1.8%
Total Population:	19,589
Population Density:	1,386.67/sq mi (535.38/km²)
ZIP code:	15122
Area code:	878
FIPS code:	4283512
Website:	www.westmifflinborough.com

Online Interactive Map

West Mifflin online map. Source: Basemap layers from Google Map, Open Street Map (OSM), Arcgisonline, Wmflabs. Boundary Data from Database of Global Administrative Areas.

West Mifflin location map. Where is West Mifflin borough?

West Mifflin location on the U.S. Map. Where is West Mifflin borough. — West Mifflin location on the U.S. Map.

West Mifflin location on the Pennsylvania map. Where is West Mifflin borough. — Location of West Mifflin in Pennsylvania.

West Mifflin Road Map

West Mifflin city Satellite Map

Geography

According to the United States Census Bureau, the borough has a total area of 14.4 square miles (37 km), of which 14.2 square miles (37 km) is land and 0.3 square miles (0.78 km), or 1.80%, is water. The landscape is largely hilly and wooded, and the borough’s eastern boundary is contiguous with the Monongahela River three separate times. Much of the original landscape has been altered as a result of the historic dumping of steel mill byproducts such as slag and fly ash.

Surrounding and adjacent neighborhoods

West Mifflin has ten land borders, including the Pittsburgh neighborhoods of Lincoln Place and Hays as well as Munhall and Whitaker, to the north, Duquesne to the east, Dravosburg to the southeast, Jefferson Hills and Pleasant Hills to the south, Baldwin to the west and also a short border with Clairton to the south.

Three segments of West Mifflin run along the Monongahela River. Adjacent to these areas across the river are Braddock, North Braddock, McKeesport and Glassport.