what county is brownstown il in?
Sponsored Topics. Brownstown is a village in Fayette County, Illinois, United States. The population was 705 at the 2000 census. Brownstown is located at 38Â°59â²43â³N 88Â°57â²12â³W / 38.99528Â°N 88.95333Â°W / 38.99528; -88.95333 (38.995403, -88.953217). According to the United States Census Bureau, the village has a total area of 0.6 square miles (1.6 kmÂ²), all of it land.