Ann Arbor is a city in and the county seat of Washtenaw County, Michigan, United States. The 2020 census recorded its population to be 123,851, making it the fifth-most populous city in Michigan. It is the principal city of the Ann Arbor metropolitan area, which encompasses all of Washtenaw County and had 372,258 residents in 2020. Ann Arbor is also included in the Metro Detroit combined statistical area and the Great Lakes megalopolis. Ann Arbor is home to the University of Michigan. The university significantly shapes Ann Arbor's economy as it employs about 30,000 workers, including about 12,000 in its medical center. The city's economy is also centered on high technology, with several companies drawn to the area by the university's research and development infrastructure. Ann Arbor was founded in 1824 by John Allen and Elisha Rumsey. It was named after the wives of the village's founders, both named Ann, and the stands of bur oak trees they found at the site of the town.

Country: United States
State: Michigan
County: Washtenaw
Founded: 1824
Incorporated: 1833 (village), 1851 (city)
Founded by: John Allen and Elisha Rumsey
Named for: The wives of the city's founders (both named Ann) and the bur oak in the area
Type: Council–manager
Mayor: Christopher Taylor (D)
Administrator: Milton Dohoney
Clerk: Jacqueline Beaudry
Population (2020): 123,851
Estimate (2021): 121,536
Rank: 231st in the United States, 5th in Michigan
Urban: 317,689 (US: 129th)
Metro: 372,258 (US: 148th)
Demonym(s): Ann Arborite
Time zone: Eastern (EST) (UTC−5)
Summer (DST): EDT (UTC−4)
ZIP code(s): 48103–48109, 48113
Area code: 734
FIPS code: 26-03000
GNIS feature ID: 0620133
Official Website: https://www.a2gov.org/Pages/default.aspx
Wikidata description: county seat of Washtenaw County, Michigan, United States
Wikidata id: Q485172
Wikidata label: Ann Arbor
Wikidata aliases: Array
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