The Ellington Town Green, located within the Ellington Center National Register Historic District, is divided into two parts: a larger, two and one-half care, pie-shaped parcel known as the East Green (or Church Park) and owned by the church; and a narrow rectangular portion known as the West Green and owned by the town. They are bordered by Maple Street (Route 140) on the north and Main Street (Route 286) on the south.

The buildings, moderately spaced around the green, are primarily residences that were built between the late 18th century to 1942. However, almost half of them were built in the second quarter of the 19th century in the Greek Revival style. Those most notable structures that serve other purposes include two churches, a library and a shopping center. The Congregational Church, (the fourth church built by the Society) is located south of the East Green and is the dominant feature of the streetscape. The other church, the church of St. Luke (1962) is across from the northwest corner of the West Green. Facing the green at its west end is Hall Memorial Library, a large building constructed of tan brick and limestone in the neo-Classical Revival style. An addition to the library was built in 1992. On the opposite end is a contemporary shopping center (c. 1960) set back from the street to accommodate an asphalt parking lot. It is about 60 per cent occupied; that part containing the post office provides the most activity.

The green itself is well maintained by the town. It is evenly graded and slopes slightly towards the south. The only curb is an asphalt one protecting the green along Main Street. East Green is ringed by a fence two feet tall comprised of stone posts connected by metal rails ten feet long (1875). Trees have been randomly planted on both portions of the green and are mostly deciduous varieties including ash, oak, crimson king maple and silver maples.

On the west Green are several memorials including a tall, rectangular stone slab with a bronze plaque dedicated to those who fought in the Colonial Wars, Revolutionary War, Civil War, Spanish American War and World War One. It is located near the eastern tip and reached by a flagstone path leading to and around it from Main and Maple Streets. Just to the west of it is another stone monument erected "in memory of those who served their country" in World War Two, Korea, and Vietnam. The only thing on the East Green is a gazebo (1992), which replaced a bandstand (1975).