Lakeland is a city in Washington County, Minnesota, United States. The population was 1,796 at the 2010 census. Lakeland was platted in 18…Lakeland is a city in Washington County, Minnesota, United States. The population was 1,796 at the 2010 census. Lakeland was platted in 1849. The 1849 Captain John Oliver House, 1850 Mitchell Jackson Farmhouse, and 1858 John T. Cyphers House are listed on the National Register of Historic Places.