Find the last 4 digits (ZIP+4) for an address in 15642

ZIP 15642, Irwin, PA is filled in. Just type the street address.

Addresses are checked through our secure proxy. Bot checks use Cloudflare Turnstile. Each device can run 5 live checks per day; repeats of the same address are free.

ZIP Code 15642 – Irwin, PA

Irwin, Pennsylvania · Westmoreland County · Eastern time

ZIP code15642
CityIrwin
StatePennsylvania
CountyWestmoreland CountyAllegheny County
Population46,325
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area46.04 sq mi
Center (lat, long)40.3193, -79.7237

Area codes in this area

724878

These are the area codes that most often serve ZIP 15642 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

15647 Larimer · 1.6 mi15678 Rillton · 2.4 mi15692 Westmoreland City · 2.5 mi15691 Wendel · 2.6 mi15615 Ardara · 2.9 mi15665 Manor · 3.5 mi15047 Greenock · 3.8 mi15611 Adamsburg · 3.8 mi

About ZIP 15642

ZIP code 15642 is assigned to Irwin, Pennsylvania. It crosses 2 counties; most of its land is in Westmoreland County. Its Census area covers about 46.04 square miles of land. The closest neighboring ZIP is 15647 (Larimer), about 1.6 miles away.

Every address in 15642 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources