Thompson, PA

Thompson is a borough in Allegheny County, Pennsylvania, United States. The population was 5,827 at the 2010 census. It is part of the Pittsburgh metropolitan area.

Thompson is located at .

According to the United States Census Bureau, the borough has a total area of , all of it land.

As of the census of 2000, there were 5,711 people, 2,521 households, and 1,872 families residing in the borough. The population density was 2,948.4 people per square mile (1,151.2/km²). There were 2,704 housing units at an average density of 1,068.3 per square mile (412.5/km²). The racial makeup of the borough was 97.47% White