According to the United States Census Bureau, the city has a total area of 21.6 square miles, of which, 17.0 square miles of it is land and 4.6 square milesof it (21.29%) is water.
Weymouth contains the Weymouth Back River and the Weymouth Fore River; its surroundings, formerly industrial, are now set aside as parks and natural areas including Webb Memorial State Park. There are also a lot of streets named after people and trees.
Weymouth residents often designate which of four distinct 'districts' they live in.
North Weymouth is considered anything north of the intersection of Church Street, North Street and Green Street. Some of the sites around North Weymouth are Great Esker Park, George Lane Beach, Webb State Park, the Wessagusset Yacht Club, Boston skyline views, and the Abigail Adams Historical Society. It also includes up and coming waterfront property that rivals similar in pricier towns.
South Weymouth is mostly south of Route 3.
East Weymouth is somewhat in the center of Weymouth, including Whitman's Pond, Jackson Square, and Town Hall. East Weymouth has several fine examples of Victorian homes, including Queen Anne, shingle, and colonial revival homes. Some particularly fine examples of these homes are being restored on Hillcrest Road.
Weymouth Landing spans a mile around Weston Park.
Weymouth is bordered on the north by Hingham Bay. Weymouth's territory includes Grape Island, Slate Island, and Sheep Island, all part of the Boston Harbor Islands National Recreation Area. Weymouth is bordered on the west by Quincy, Braintree, and Holbrook. It is bordered on the south by Abington and Rockland. Weymouth is bordered on the east by Hingham.