The Plymouth Green, located within the Plymouth Center Local Historic District, is a rectangular greensward at the northwest corner of the intersection of Main (Route 6) and North Streets. It is bordered on the north by Park Street which is incorporated into the green on the west side. This asphalt road follows the path of a lane cut through the green in the 18th century. Two structures, the First Congregational Church (1838) and Stoughton building, used as a church annex, are on the northwest corner of the green. Behind and to the north of the church is a cemetery which is separated from the green by a low stone wall and a chain link fence. The cemetery is not readily visible from the green because the land slopes to the east behind the church. Parking for the church and cemetery is provided near the church and Stoughton building. A concrete pathway diagonally crosses the green from the northwest and additional asphalt walkway follows the edge of North Street.

The green is sparsely planted mainly with deciduous trees including maple, dogwood, ash and oak. They border North Street and Park Street, leaving the interior of the green open. Just south and west of the center of the green is a granite obelisk honoring Civil War veterans. A flagpole stands west of it. At the northeast corner is a small boulder with a bronze plaque marking the site of the first St. Peter's Church. Near Main Street, a metal structure supports signs for events on the green. Two signs, one identifying the Congregational Church and the other the burying ground, are located on Main Street near Park Street.

The Plymouth Green is located within what is primarily a 19th century residential neighborhood dominated by the Greek Revival Congregational Church. It is framed on the north, east and south by moderately spaced buildings providing a moderate sense of enclosure. This is not true, however, for the west side and particularly the northwest corner where the Old Burial Ground is located.

The 19th century ambiance is waning on the south side despite the existence of the small brick building constructed in 1855 as the Town Hall and now used by the historical society. Alterations to an early 20th century brick commercial building and a 19th century wood frame building on either side of Town Hall, and the construction of a gas station/Dairy Mart on the southwest corner diagonally across from the green, mark the intrusion of twentieth century strip development that is taking over Route 6.