YMCA (860) 871-0008 11 Pinney St, Ellington, CT 06029 (serving East Windsor, Ellington, Enfield, Rockville, Somers, South Windsor, Tolland, and Vernon ) Ellington is a town in Tolland County , Connecticut . Ellington was incorporated in May, 1786, from East Windsor . As of the 2000 census , the town population