Find the last 4 digits (ZIP+4) for an address in 15666

ZIP 15666, Mount Pleasant, PA is filled in. Just type the street address.

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ZIP Code 15666 – Mount Pleasant, PA

Mount Pleasant, Pennsylvania · Westmoreland County · Eastern time

ZIP code15666
CityMount Pleasant
StatePennsylvania
CountyWestmoreland CountyFayette County
Population15,980
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area53.46 sq mi
Center (lat, long)40.1610, -79.5098

Area codes in this area

724878

These are the area codes that most often serve ZIP 15666 (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

15674 Norvelt · 3.2 mi15621 Calumet · 3.7 mi15688 Tarrs · 4.1 mi15689 United · 4.5 mi15612 Alverton · 5 mi15639 Hunker · 5.3 mi15610 Acme · 5.4 mi15616 Armbrust · 5.5 mi

About ZIP 15666

ZIP code 15666 is assigned to Mount Pleasant, Pennsylvania. It crosses 2 counties; most of its land is in Westmoreland County. Its Census area covers about 53.46 square miles of land. The closest neighboring ZIP is 15674 (Norvelt), about 3.2 miles away.

Every address in 15666 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