Lac La Belle is a village located mostly in Waukesha County in the U.S. state of Wisconsin. The population was 329 at the 2000 census. The village is located mostly within the Town of Oconomowoc in Waukesha County. On March 28, 2002, the village annexed a portion of land in the Town of Ixonia in Jefferson County. The total population of the town was estimated at 340 in 2004 (338 in Waukesha County, 2 in Jefferson County).[3]