Litchfield is a town in and former county seat of Litchfield County, Connecticut, United States. The population was 8,192 at the 2020 census. The town is part of the Northwest Hills Planning Region. The boroughs of Bantam and Litchfield are located within the town. There are also three unincorporated villages: East Litchfield, Milton, and Northfield. Northfield, located in the southeastern corner of Litchfield, is home to a high percentage of the Litchfield population.

Litchfield County is in northwestern Connecticut, United States. As of the 2020 census, the population was 185,186. The county was named after Lichfield, in England. Litchfield County has the lowest population density of any county in Connecticut and is the state's largest county by area.