The CDP is in the south-central part of the town of Greenwich, bordered to the south by Long Island Sound from Byram Harbor on the west to Indian Harbor on the east. The CDP includes Greenwich Harbor, as well as the Greenwich Avenue Historic District and the related Greenwich Municipal Center Historic District. To the north the CDP extends as far as North Maple Avenue, Ridgebrook Road, Andrews Road, and the junction of North Street with Fairfield Road. The CDP is bordered to the west by the Greenwich neighborhoods of Pemberwick and Byram, and the neighborhood of Cos Cob is a short distance to the east.
