Irwin is a borough in Westmoreland County, Pennsylvania, United States. The population was 3,902 at the 2020 census. Located 22 miles (35 km) southeast of Pittsburgh, some of the most extensive bituminous coal deposits in the commonwealth are located in Irwin. In the past, iron foundries, flour mills, car shops, facing and planing mills, electrical goods and mirror factories were based in the borough.

Official town website ↗

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

How Irwin ranks

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#3Rent easiest to afford in PA #23Most walkable in PA #138Lowest property tax in PA All PA rankings →

Town numbers

ZIP code15642

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Living in Irwin

Housing in Irwin

$267K≈ same as a year ago Typical home value · Zillow

The typical Irwin home is worth about $267,000, about the same as a year ago, 8% below the Pennsylvania typical home.

Only 4 sales in May 2026, too few for a market read. The typical value is the steadier guide.

Zillow Home Value Index · Redfin Data CenterHousing market →

Safety in Irwin

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Not graded

A grade needs all of the FBI's latest years (2023–2025). Irwin's police department reported only 2024, so we don't grade it yet. The figures below are still real.

Violent crime per 1,000

Irwin 0.4

Pennsylvania 2.5

U.S. 3.6

Property crime per 1,000

Irwin 0.9

Pennsylvania 14.7

U.S. 17.7

FBI crime data, 2024 · crimes reported to policeCrime & safety →

Work & commute in Irwin

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Most working residents leave Irwin for work: only 3% work in town. The top destinations are Pittsburgh (14%), North Huntingdon (10%) and Hempfield (6%). Half commute less than 11 miles.

Pittsburgh

14%

North Huntingdon

10%

Hempfield

Monroeville

3%Work in townlive and work in Irwin 11 miWhere do people commute?the commute map 1,322Jobs based herea commuter town

Census LEHD 2023 · ACSWork & commute in Irwin →

Health in Irwin

Compared with Pennsylvania

1better than PA

of 5 measures CDC estimates. The other 4 are too close to call.

Conditions 1▲ 0 close Habits all close Care all close

BetterToo close to callWorse

What stands out

7.8%Fewer older adults who have lost all their teethPA 14.5% · better

Care nearby

Ahn Emerus WestmorelandGreensburg · 5.3 mi · ER

Community Health ClinicGreensburg · 8.4 mi · sliding-scale fees

Primary careNo shortage

DentalNo shortage

Mental healthNo shortage

CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Irwin · CMS · HRSAHealth in Irwin →

Natural hazards in Irwin

Very low

Expected storm and flood damage is higher than in 12% of U.S. communities.

🌊 Inland flooding

4Does Irwin flood?paid flood claims since 1980 1Disasters that paid out herefederal disaster sent FEMA money to Irwin

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Irwin →

Climate in Irwin

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Irwin has chilly winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 21°, and about 25 inches of snow falls in a normal winter.

40° / 23°Winter

62° / 39°Spring

82° / 60°Summer

64° / 43°Fall