Bruin, Pennsylvania

Bruin is a borough in Butler County, Pennsylvania, United States. The population was 524 at the 2010 census.GeographyBruin is located in northeastern Butler County at, in the valley of Bear Creek, a tributary of the Allegheny River. It is approximately north of Pittsburgh. The borough is surrounded by Parker Township but is separate from it. Pennsylvania Route 268 passes through the center of town, leading northeast 4mi to the city of Parker and south 3mi to Petrolia.According to the United States Census Bureau, the borough of Bruin has a total area of 4.7km2, all of it land.DemographicsAs of the census of 2000, there were 534 people, 204 households, and 151 families residing in the borough. The population density was 308.8 people per square mile (119.2/km²). There were 228 housing units at an average density of 131.8 per square mile (50.9/km²). The racial makeup of the borough was 98.69% White, and 1.31% from two or more races. Hispanic or Latino of any race were 0.56% of the population.