Plymouth County, Massachusetts

Plymouth County
Plymouth County
County
	First Church Site marker, Men of Kent Cemetery, Meetinghouse Lane, Scituate, Massachusetts
	Seal
	Location within the U.S. state of Massachusetts
	Massachusetts's location within the U.S.
	Coordinates: 41°58′44″N 70°49′08″W / 41.978878°N 70.818954°W
Country	United States
State	Massachusetts
Founded	June 2, 1685
Seat	Plymouth and Brockton
Largest city	Brockton
Area
• Total	1,093 sq mi (2,830 km2)
• Land	659 sq mi (1,710 km2)
• Water	434 sq mi (1,120 km2) 40%
Population (2020)
• Total	530,819
• Density	806.1/sq mi (311.2/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
Congressional districts	4th, 8th, 9th
Website	www.plymouthcountyma.gov

Plymouth County is a county in the U.S. state of Massachusetts, south of Boston. As of the 2020 census, the population was 530,819.^[1] Its county seats^[2] are Plymouth and Brockton.^[3] In 1685, the county was created by the Plymouth General Court, the legislature of Plymouth Colony, predating its annexation by the Massachusetts Bay Colony.

^ "2020 Census Demographic Data Map Viewer". United States Census Bureau. Archived from the original on August 12, 2021. Retrieved August 12, 2021.
^ The term shire town is the statutory term for the Massachusetts town having a county court and administration offices, but county seat is the standard term used in general communications by the Massachusetts government. See, for example: Secretary of the Commonwealth: A Listing of Counties and the Cities and Towns Within http://www.sec.state.ma.us/cis/cisctlist/ctlistcoun.htm.
^ "Find a County". National Association of Counties. Retrieved June 7, 2011.