Hartland is a village in Waukesha County, Wisconsin, along the Bark River, and is a suburb of Milwaukee. The population was estimated at 8,689 in 2006. Hartland is located at 43°6′1″N 88°20′40″W / 43.10028°N 88.34444°W / 43.10028; -88.34444 (43.100180, -88.344452). It is in the Lake Country area of Waukesha County. According to the United States Census Bureau, the village has a total area of 4.5 square miles (11.7 km²), of which, 4.5 square miles (11.7 km²) of it is land and 0.22% is water.