Washtenaw County | |
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Coordinates: 42°15′N 83°50′W / 42.25°N 83.84°W | |
Country | United States |
State | Michigan |
Founded | 1822 (created) 1826 (organized)[1][2] |
Named for | O-wash-ta-nong ("far away water"), Ojibwe name for the Grand River |
Seat | Ann Arbor |
Largest city | Ann Arbor |
Area | |
• Total | 722 sq mi (1,870 km2) |
• Land | 706 sq mi (1,830 km2) |
• Water | 16 sq mi (40 km2) 2.3% |
Population (2020) | |
• Total | 372,258 |
• Density | 527/sq mi (203/km2) |
Time zone | UTC−5 (Eastern) |
• Summer (DST) | UTC−4 (EDT) |
Congressional district | 6th |
Website | washtenaw |
Washtenaw County (/ˈwɔːʃtənɔː/ WAWSH-tə-naw) is a county located in the U.S. state of Michigan. At the 2020 census, the population was 372,258.[3] The county seat and largest city is Ann Arbor.[4] The county was authorized by legislation in 1822 and organized as a county in 1826.[1] Washtenaw County comprises the Ann Arbor Metropolitan Statistical Area. The county is home to the University of Michigan, Eastern Michigan University, Washtenaw Community College, and Concordia University Ann Arbor.