Brown County, located in the northeastern part of the state of South Dakota, was officially established on the 20th of July, 1880. The county contains the third largest city in South Dakota, Aberdeen, which is the county seat and center of commerce for the region.

The Brown County, South Dakota Genealogy Website is a member of the SDGENWEB, which is a division of the USGenWeb Project. This site is meant to serve as a source of online genealogical and historical information pertaining to Brown County, along with containing an archive of genealogical databases for the county.