The Tolland Green is a long and narrow strip of land oriented in a north-south direction.

The historic district contains 55 contributing buildings and one other site,[2] and is located primarily along Merrow Road (Route 195) from just south of Cider Mill Road in the south, past the Tolland Green, then widening in the north to encompass both Tolland Stage Road (Route 74) and the street known as Tolland Green to roughly Dunn Hill Road.

The historic Congregational Church, the Old Tolland County Courthouse (built in 1822; site of the Tolland Public Library from 1899 to 1985), the Board of Education building (in a converted residence built in 1830), the Ratcliffe Hicks Memorial School (built in 1908; now the Hicks Memorial Municipal Center and Library), and the Old Tolland County Jail and Museum are located near the intersection where the Route 74 cuts through the Green.

[4] Historic residences include the Hicks-Stearns Family Museum, former home of Ratcliffe Hicks.

The district is significant for its landscape qualities, its historical associations, and its Federal and Victorian architecture.