The Farmington Historic District encompasses a 275-acre (111 ha) area of the town center of Farmington, Connecticut. It was listed on the National Register of Historic Places in 1972. The area roughly corresponds to the section of Route 10 between Route 4 and U.S. Route 6, and includes 115 buildings, primarily residences, built before 1835. The district includes several National Historic Landmarks, include Hill-Stead, the Austin F.