Macomb County, Michigan

Macomb County
County
Macomb County Administration Building
Seal
Location within the U.S. state of Michigan
Michigan's location within the U.S.
Coordinates: 42°40′N 82°55′W / 42.67°N 82.91°W / 42.67; -82.91
Country	United States
State	Michigan
Founded	January 15, 1818[1][2]
Named for	Alexander Macomb
Seat	Mount Clemens
Largest city	Warren
Area
• Total	571 sq mi (1,480 km2)
• Land	479 sq mi (1,240 km2)
• Water	92 sq mi (240 km2)  16%
Population  (2020)
• Total	881,217
• Density	1,500/sq mi (600/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
Congressional districts	9th, 10th
Website	macombgov.org

Macomb County (/məˈkoʊm/ mə-KOHM) is a county located in the eastern portion of the U.S. state of Michigan, bordering Lake St. Clair, and is part of northern Metro Detroit. As of the 2020 Census, the population was 881,217, making it the third-most populous county in the state.^[3] The county seat is Mt. Clemens.^[4] Macomb County is part of the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area. The city of Detroit is located on the county's southern border. Macomb County contains 27 cities, townships and villages, including three of the top ten most-populous municipalities in Michigan as of the 2020 census: Warren (#3), Sterling Heights (#4) and Clinton Township (#8). Most of this population is concentrated south of Hall Road (M-59), one of the county's main thoroughfares.