Arnold is a city in Westmoreland County, Pennsylvania, United States. It is part of the Greater Pittsburgh metropolitan area. The population was 4,772 at the 2020 census.

Official town website ↗

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

How Arnold ranks

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#35Most affordable in PA #101Lowest property tax in PA #141Most walkable in PA All PA rankings →

Town numbers

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Living in Arnold

Housing in Arnold

$85K▼ 17.7% in a year Typical home value · Zillow

The typical Arnold home is worth about $85,000, down 17.7% in a year, 71% below the Pennsylvania typical home.

A seller's market

Buyer’sBalancedSeller’s

Days on market119

Sale-to-list95.1%

Sold in May9

Zillow Home Value Index · Redfin Data CenterHousing market →

Safety in Arnold

—

Not graded

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

Violent crime per 1,000

Arnold 10.4

Pennsylvania 2.3

U.S. 3.3

Property crime per 1,000

Arnold 14

Pennsylvania 13.6

U.S. 15.5

FBI crime data, 2025 · crimes reported to policeCrime & safety →

Work & commute in Arnold

Full picture →

Most working residents leave Arnold for work: only 7% work in town. The top destinations are Pittsburgh (15%), New Kensington (7%) and Monroeville (3%). Half commute less than 12 miles.

Pittsburgh

15%

New Kensington

Monroeville

Lower Burrell

7%Work in townlive and work in Arnold 12 miWhere do people commute?the commute map 1,232Jobs based herea commuter town

Census LEHD 2023 · ACSWork & commute in Arnold →

Health in Arnold

Compared with Pennsylvania

4worse than PA

of 5 measures CDC estimates. The other 1 is too close to call.

Conditions 1▼ 0 close Habits 1▼ 0 close Care 2▼ 1 close

BetterToo close to callWorse

What stands out

25.9%More older adults who have lost all their teethPA 14.5% · worse 45.6%More adults sleeping under 7 hoursPA 37.9% · worse 53.4%Fewer adults seeing a dentistPA 64.4% · worse

Care nearby

Allegheny Valley HospitalNatrona · 3 mi · ER

Community Health ClinicNew Kensington · 0.9 mi · sliding-scale fees

Primary careNo shortage

DentalNo shortage

Mental healthNo shortage

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

Natural hazards in Arnold

High

Expected storm and flood damage is higher than in 78% of U.S. communities.

🌊 Inland flooding

2Does Arnold flood?paid flood claims since 1978 1Disasters that paid out herefederal disaster sent FEMA money to Arnold MapArnold vs. its neighborsnearby towns shaded by rating

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

Climate in Arnold

Full climate →

Arnold has chilly winters and warm summers. A typical July afternoon reaches 85°, a January night drops to 21°, and about 25 inches of snow falls in a normal winter.

40° / 23°Winter

62° / 39°Spring

83° / 60°Summer

65° / 43°Fall

How much snow does Arnold get?About 25 inches a winter.Rain & snow →When is the first frost?Around Nov 2, with the last in spring around Apr 16.Frost dates →Is it warmer than it used to be?+1.0° vs. the 20th century.Then & now →

NOAA U.S. Climate Normals, 1991–2020Climate in Arnold →

Schools in Arnold

All Arnold schools →

C⁻

School Grade C-

The public schools Arnold’s kids attend, from kindergarten through graduation, trail 82% of Pennsylvania’s districts on state tests and graduation. Among towns with similar incomes, they rank near the bottom.

See how Arnold’s schools compare in PA →

DistrictNew Kensington-Arnold SDSchools2

Roy A. Hunt El Sch C-Elementary · Grades 3–6 · 609 students Berkey SchElementary · Grades 1–2 · 289 students

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results and graduation rates, graded within PA. Ratings are from neighbors.