Irwin, Pennsylvania

Irwin is a borough in Westmoreland County, Pennsylvania, 22 miles (35 km) southeast of Pittsburgh. Some of the most extensive bituminous coal deposits in the commonwealth are located here. In the past, iron foundries, flour mills, car shops, facing and planing mills, electricals goods, and mirror factories provided employment to the residents. In 1900, the population numbered 2,452; it increased to 2,886 in 1910. The population was 3,973 at the 2010 census.

Irwin, Pennsylvania
Borough
Irwin's Main Street
Location of Irwin in Westmoreland County, Pennsylvania.
Irwin
Coordinates: 40°19′40″N 79°42′11″W
CountryUnited States
StatePennsylvania
CountyWestmoreland
SettledSeptember 1853
IncorporatedNovember 14, 1864
Government
  TypeBorough Council
  MayorJeff Clem
Area
  Total0.84 sq mi (2.17 km2)
  Land0.84 sq mi (2.17 km2)
  Water0.00 sq mi (0.00 km2)
Elevation
1,007 ft (307 m)
Population
 (2020)
  Total3,902
  Density4,661.89/sq mi (1,800.43/km2)
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (EDT)
Zip code
15642
Area code724
FIPS code42-37208
WebsiteBorough website
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