West Mifflin Allegheny County, Pennsylvania

West Mifflin: Borough of Pennsylvania

West Mifflin locator map
Location of West Mifflin on Pennsylvania map.


West Mifflin is a city located in the county of Allegheny in the U.S. state of Pennsylvania. Its population at the 2010 census was 20,313 and a population density of 1,400 people per km². After 10 years in 2020 city had an estimated population of 19,588 inhabitants.

The city was created 77 years ago in 1944.

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NewGates image


West Mifflin is located at 40°21'48"N 79°51'59"W (40.3634000, -79.8664400).

West Mifflin map


West Mifflin forecast: A chance of rain showers after 2pm. Partly sunny, with a high near 61. Chance of precipitation is 30%. more

West Mifflin Quick Facts

Population : 19,588 (2020)
Country : United States of America
State : Pennsylvania (United States)
County : Allegheny County
Postal code : 15122
Area : 14.51 km2
Altitude : 1,096 feet / 334 meters
Establishment : January 01, 1944 (77 years ago)
Time Zone : America/New_York
Local time : 12:51:32 (24th October 2021)
Density : 1,350 Pop. per km² as of 2020
Population growth : -3.7% (2010-2020)
Weather : 61℉ Partly Sunny then Chance Rain Showers 7-days weather


According to census records, the population of West Mifflin decreased by 3.7% in 10 years.

Year Population % Change Method
2010 20,313 - census
2011 20,320 0.03% estimation process
2012 20,312 -0.04% estimation process
2013 20,286 -0.13% estimation process
2014 20,209 -0.38% estimation process
2015 20,056 -0.76% estimation process
2016 19,939 -0.59% estimation process
2017 19,795 -0.73% estimation process
2018 19,681 -0.58% estimation process
2019 19,699 0.09% estimation process
2020 19,588 -0.57% estimation process

West Mifflin zip code is 15122. County name: Allegheny, County fips: 42003

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People born in West Mifflin (1)

American basketball player Don Asmonga was born in West Mifflin

Schools in West Mifflin

College & universities near West Mifflin, PA

Code Name City ZIP
214786 Pennsylvania State University-Penn State Greater Allegheny McKeesport (PA) 15132-7644

Stations (7)

Amtrak & bus stations near West Mifflin, PA

Code Name Address Type
PGH Union Station 1100 Liberty Avenue RAIL
GNB Greensburg Harrison Ave. and Seton Hill Dr. RAIL
LAB Latrobe station 329 McKinley Ave RAIL
COV Connellsville station North Water Street and West Peach Street RAIL
JST Johnstown 47 Walnut Street RAIL

Post offices near West Mifflin

Post Office Name City ZIP
Mckeespor Post Office McKeesport (PA) 15134

Other places with the same name (1)

Other cities in Allegheny County

Cities, Towns, Neighborhoods & Other Populated Places in Allegheny County , PA. (more)

City Name Population Title
Pittsburgh 299,226 County seat in Allegheny County, Pennsylvania, United States
Penn Hills 40,517 Home rule municipality of Pennsylvania
Municipality of Bethel Park 32,345 Home rule municipality of Pennsylvania
Bethel Park 32,118 Home rule municipality of Pennsylvania
Mount Lebanon 31,418 Municipality in Pennsylvania
Monroeville 28,176 City in Alabama, United States
Plum 26,993 Borough of Pennsylvania
Moon 25,204 Township in Allegheny County, Pennsylvania
Unity 21,600 Township in Westmoreland County, Pennsylvania, United States
Upper Saint Clair 19,896 Home rule municipality in Allegheny County
McKeesport 18,927 City in Allegheny County, Pennsylvania, United States
Wilkinsburg 15,186 Borough of Pennsylvania
Franklin Park 14,883 Borough of Pennsylvania
Cecil 13,220 Township in Washington County, Pennsylvania
Elizabeth 11,494 Borough in Pennsylvania, United States
Jefferson Hills 11,136 Borough of Pennsylvania

Distance to Other Cities

West Mifflin distances to largest Pennsylvania cities