West Mifflin, Pennsylvania

West Mifflin population, 2020 to 2024

West Mifflin lost 669 residents from July 2020 to July 2024, a change of -3.4%. In the latest year it moved by -93. Among 193 Pennsylvania places of 5,000 or more, that growth ranks 173rd; the median place changed by +0.2%. The median place of 5,000+ in Pennsylvania has 8,364 people, so West Mifflin is 2.3 times that size.

West Mifflin covers 14.22 square miles of land and 0.28 of water, for 1,329 people per square mile of land. The median Pennsylvania place of 5,000+ has 3,911, so West Mifflin is less dense than the typical town.

What county West Mifflin is in

All of West Mifflin's residents live in Allegheny County, which had 1,231,814 residents in 2024. West Mifflin holds 1.5% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in West Mifflin

2 ZIP Code Tabulation Areas (ZCTAs) overlap West Mifflin by at least 10% of the ZCTA's or the borough's land: 15122, 15123. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a borough that annexed land after 2020 may reach into ZIP codes not listed here.

Where West Mifflin is

The Census internal point of West Mifflin is at 40.357700, -79.905400. Harrisburg, the capital, is 159.3 miles E in a straight line. The nearest larger place is Baldwin, PA (20,712 people), 2.6 miles away. The nearest city of 100,000 or more is Pittsburgh, PA, 6.8 miles away.

Daylight in West Mifflin

At 40.36° N, West Mifflin gets about 15 h 03 min of daylight around the June solstice and 9 h 17 min around the December solstice, a swing of 5 h 46 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near West Mifflin

The eight nearest incorporated places of 1,000+ in Pennsylvania, measured between internal points. The closest is Dravosburg, 0.9 miles away, with 1,552 people.