Irwin, PA ZIP code

The ZIP code for Irwin, Pennsylvania is 15642. It is in Westmoreland County.

15642

Population in these ZIPs: 46,325
Avg. median income: $97,700population-weighted
Typical home value: $271,400population-weighted
Metro area: Pittsburgh, PA

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Irwin, PA ZIP code list

Irwin, PA ZIP codes
ZIP code	Population	Median income	Typical home value
15642	46,325	$97,706	$271,400

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Irwin

Larimer 2 mi
Rillton 2 mi
Westmoreland City 3 mi
Wendel 3 mi
Ardara 3 mi
Manor 3 mi
Greenock 4 mi
Adamsburg 4 mi
Herminie 4 mi
Darragh 4 mi
Coulters 4 mi
Trafford 5 mi

Frequently asked questions

What is the ZIP code for Irwin, PA?

The ZIP code for Irwin, PA is 15642.

What county is Irwin, Pennsylvania in?

Irwin ZIP codes are in Westmoreland County.