Monroeville is a borough with home rule status in Allegheny County, Pennsylvania, United States. Located about 15 miles (24 km) east of the city of Pittsburgh, Monroeville is a suburb with mixed residential and commercial developments. As of the 2010 census, Monroeville was home to 28,386 people.According to the United States Census Bureau, the borough has a total area of 19.8 square miles (51 km2), of which 0.05% is water.
Named for Joel Monroe, the area's first postmaster, Monroeville was settled in the mid to late 18th century. The area was incorporated as Patton Township in 1849 before becoming the borough of Monroeville on January 25, 1951. Monroeville became a Home Rule Charter Municipality on May 21, 1974.