US Gazetteer > Pennsylvania Gazetteer > Pennsylvania ZIP Codes > Irwin, PA 15642

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Preferred Name, USPS
Irwin, PA 15642
Acceptable Alternative
N Huntingdon, PA 15642
No Huntingdon, PA 15642
North Huntingdon, PA 15642
North Irwin, PA 15642

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ZIP Code 15642 has segments in 2 Counties (Allegheny, Westmoreland).

The 15642 ZIP Code is centered1 in Westmoreland County at latitude 40.329 and longitude -79.721 (Panoramio Photos). It is a standard type ZIP Code. Westmoreland County is in the Eastern Time Zone (UTC -5 hours) and observes daylight savings time.

The population in ZIP Code Tabulation Area (ZCTA) 15642 was 44,880 with 17,964 housing units; a land area land area of 47.23 sq. miles; a water area of 0.02 sq. miles; and a population density of 950.32 people per sq. mile for Census 2000. Demographic Profile

Irwin, PA 15642 Map (Marker is ZIP Code Centroid)

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Nearby Cities, Towns & Census Designated Places

Scab Hill, PA (< 0.1 mile)
Shawtown, PA (< 0.1 mile)
North Irwin, PA (< 0.1 mile)
Jacktown, PA (< 0.1 mile)
Hahntown, PA (< 0.1 mile)
 Fairmount, PA (< 0.1 mile)
Circleville, PA (< 0.1 mile)
Browntown, PA (< 0.1 mile)
Cereal, PA (1.4 miles S)
Barners Hill, PA (1.4 miles NW)

Nearby Neighborhoods, Subdivisions & Other Small Populated Places

Byerly, PA (2.4 miles WNW)
Edna Number Two, PA (3.1 miles SE)
Yohoghany, PA (3.6 miles SW)
Fulton, PA (3.9 miles S)
Edna Number One, PA (4.1 miles ESE)
Stewart, PA (4.3 miles NW)
Coulter, PA (4.7 miles WSW)
Taylor, PA (5.5 miles NW)
Fite Station, PA (6.3 miles WNW)
Basforth Acres, PA (7.7 miles E)

ZIP Codes - Key Concepts

  1. ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
  2. The centroid of a ZIP Code may be in one County and the associated city/town in another.
  3. In rural areas, a single ZIP Code may be used for cities and towns in several different Counties.
  4. ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
  5. ZIP Codes are only loosely tied to cities.

1 Keeping the above key concepts in mind, what we informally refer to as the "center" of a ZIP Code is most often actually the centroid of a polygon.