[1] The entire borough was designated a Connecticut historic district in 1959 by special act of the state General Assembly and is listed on the National Register of Historic Places.

[2][4] The 1978 NRHP listing was an 840-acre (340 ha) area including 459 buildings.

The review process is intended to prevent changes that would be "incongruous with the District's historic and architectural character.

U.S. Route 202 passes through the center of the borough at the Litchfield Green, leading northeast 5 miles (8 km) to Torrington and southwest 18 miles (29 km) to New Milford.

According to the United States Census Bureau, the borough has a total area of 1.4 square miles (3.6 km2), all land.

35.4% of all households were made up of individuals, and 18.3% had someone living alone who was 65 years of age or older.