The village of Northfield resides in the southeastern corner of Litchfield. Northfield shares an indefinite northern boundary with the rest of Litchfield proper, this boundary is roughly co-terminus with that of the Northfield Fire District. The village is bordered on the east by the town of Harwinton, on the south by the town of Thomaston, and on the west by the town of Morris.
The village of Northfield has its own Postal Zip Code, 06778, but has no operating Post Office. Northfield is serviced by a Volunteer Fire Department, the Northfield Volunteer Fire Company, which was chartered in 1938 and resides on Knife Shop Road. The Northfield Volunteer Fire Company is in the process of finishing their new building which they moved into during the late months of 2009.
The Litchfield Montessori School is located on Knife Shop Road, in the building that once housed the Northfield Elementary School. The Litchfield Montessori School was founded in 1972, and moved to its current location in 1979. This school serves children between the ages of 1½ and 12 years of age.