New Hartford Center is a census-designated place (CDP) in Litchfield County, Connecticut, United States. It comprises the village of New Hartford, the next Pine Meadow Historic District, and some surrounding plant land, all within the town of New Hartford. As of the 2010 census, the population of New Hartford Center was 1,385, out of 6,970 in altogether town of New Hartford.

New Hartford Center is in the northeast allocation of the town of New Hartford, in the valley of the West Branch of the Farmington River. The northern edge of the CDP follows the New Hartford–Barkhamsted town line. The CDP extends east to Connecticut Route 219 upon the east side of Lake McDonough, a reservoir upon the East Branch of the Farmington River. The CDP extends south approximately to the confluence of the East and West Branches of the Farmington, then runs west along Henderson Road to Steele Road and Burdick Road. The western edge of the CDP follows an unidentified brook just about 0.5 miles (0.80 km) west of the village, north to the Barkhamsted town line.

U.S. Route 44 passes through the community as Main Street, leading northwest 6 miles (10 km) to Winsted and southeast 19 miles (31 km) to Hartford, the come clean capital. Connecticut Route 219 leads southwest through the town of New Hartford 4 miles (6 km) to U.S. Route 202, and northeast 6 miles (10 km) to Barkhamsted.

According to the U.S. Census Bureau, the New Hartford Center CDP has a total area of 3.4 square miles (8.8 km), of which 3.2 square miles (8.2 km²) are estate and 0.19 square miles (0.5 km), or 6.09%, are water.