Penn is a borough in Westmoreland County, Pennsylvania, United States. The population was 460 at the 2000 census. The borough was named for Pennsylvania founder William Penn.
Penn is located at 40°19′44″N 79°38′25″W (40.329018, -79.640141).
According to the United States Census Bureau, the borough has a total area of 0.2 square miles (0.52 km2), all of it land.
As of the census of 2000, there were 460 people, 182 households, and 133 families residing in the borough. The population density was 2,974.7 people per square mile (1,184.0/km²). There were 187 housing units at an average density of 1,209.3 per square mile (481.3/km²). The racial makeup of the borough was 96.52% White, 1.52% African American, 1.09% from other races, and 0.87% from two or more races.
There were 182 households out of which 37.4% had children under the age of 18 living with them, 51.1% were married couples living together, 18.7% had a female householder with...