Westmoreland County, Pennsylvania Demographics 2026

Population Overview

Westmoreland County is located in Pennsylvania with a total population of 353,345. It is the 11th most populous county out of 67 in Pennsylvania. The county encompasses 39 Census-designated places.

Age Demographics

The median age in Westmoreland County is 47.1 years. This is 15% higher than the state median of 40.9 years.

Economy, Income & Housing

The median household income in Westmoreland County is $72,468. This is 5% lower than the state median of $76,081. Compared to the national median of $78,538, household income here is 8% lower. The poverty rate stands at 10.0%. This is 15% lower than the state poverty rate of 11.8%. The unemployment rate is 4.8%. This is 8% lower than the state rate of 5.3%. The median home value is $193,100. Housing costs are 20% lower than the state median of $240,500. With a home-value-to-income ratio of just 2.7x, Westmoreland County is one of the most affordable housing markets in the area. 78.3% of occupied housing units are owner-occupied. This homeownership rate is 13% higher than the state average of 69.3%.

Race & Ethnicity

Westmoreland County has a predominantly White (non-Hispanic) population, comprising 92.0% of all residents. Black or African American residents account for 2.4%. The Black or African American population (2.4%) is well below the state average of 10.3%. The Hispanic or Latino population (1.5%) is well below the state average of 8.4%. The Asian population (0.9%) is well below the state average of 3.7%.

Education

31.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 8% lower than the state rate of 34.5%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.4%.