Chelsea, MA -- U.S. city in Massachusetts Population (2000): 35080 Housing Units (2000): 12337 Land area (2000): 2.187469 sq. miles (5.665518 sq. km) Water area (2000): 0.293629 sq. miles (0.760495 sq. km) Total area (2000): 2.481098 sq. miles (6.426013 sq. km) FIPS code: 13205 Located within: Massachusetts (MA), FIPS 25 Location: 42.396382 N, 71.033529 W ZIP Codes (1990): 02150 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Chelsea, MA Chelsea