Brainerd is a city in Crow Wing County, Minnesota, United States. Its population was 13,592 as of the 2010 census. It is the county seat of Crow Wing County, and is one of northern Minnesota's largest cities. Brainerd straddles the Mississippi River several miles upstream from its confluence with the Crow Wing River, having been founded as a site for a railroad crossing above the confluence. Brainerd is the principal city of the Brainerd Micropolitan Area, a micropolitan area covering Cass and Crow Wing counties and with a combined population of 91,067 as of the 2010 census. The Brainerd area is a major tourist destination for Minnesota.