Pine County is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 28,876. Its county seat is Pine City. The county was formed in 1856 and organized in 1872. Today, Pine County is the fastest growing county in the state.

Pine City is a city in and the county seat of Pine County, in east central Minnesota, United States. The population was 3,130 at the 2020 census. Part of the city is on the Mille Lacs Indian Reservation. Founded as a railway town, it soon became a logging community and the surrounding lakes made it a resort town. Today, it is in part as a commuter town for people working in the Minneapolis–Saint Paul metropolitan area.