Lakeville is a census-designated place (CDP) in Litchfield County, Connecticut, United States, close to Dutchess County, New York. It is within the town of Salisbury, but has its own ZIP Code (06039). As of the 2010 census, the population of Lakeville was 928, out of 3,741 in the entire town of Salisbury. The Hotchkiss School is located in Lakeville, and the Indian Mountain School is nearby.