County Dossier

Westmoreland County

Pennsylvania | County

Population

352,500

Land Area

1,027.7 sq mi

Context

Metro

Geography

County silhouette

Land Area
1,027.7 sq mi
Water Area
8.2 sq mi
Water Share
0.8%

Terrain Layer

Open the county terrain view inside the atlas flow.

Terra Firma

Population & Housing

Population

352,500

Density
343.0 / sq mi
Households
154,979
Housing Units
168,812
Median Age
47.2 years

Income & Economy

Median Household Income

$74,109

GDP

$19.39B

Real GDP Change+0.5%
Per Capita Income
$43,509
Personal Income
$23.20B
Personal Income Per Capita
$66,110

Classification

RUCC 1
Metro

Counties in metro areas of 1 million population or more

Relief

Min

722 ft

Mean

1,322 ft

Max

2,975 ft

Provenance

GEOID 42129 ANSI 01209191
Latitude 40.31107 Longitude -79.46669
Canonical 2025 Gazetteer ACS ACS 2020-2024 5-year BEA BEA county 2024 release (2026-02-05) BLS BLS LAUS 2024 annual average USDA USDA RUCC 2023 USGS USGS 3DEP published as of 2026-03-23