Brownstown is an unincorporated community and census-designated place in West Earl Township, Lancaster County, Pennsylvania, United States. As of the 2010 census, the population was 2,816. Brownstown is in central Lancaster County, in the western section of West Earl Township. It is 5 miles southwest of Ephrata and 9 miles northeast of Lancaster, t…Brownstown is an unincorporated community and census-designated place in West Earl Township, Lancaster County, Pennsylvania, United States. As of the 2010 census, the population was 2,816. Brownstown is in central Lancaster County, in the western section of West Earl Township. It is 5 miles southwest of Ephrata and 9 miles northeast of Lancaster, the county seat.