Ann Arbor, Michigan

**Ann Arbor** is a city in the US state of Michigan. It is the county seat of Washtenaw County. According to the 2020 United States Census, Ann Arbor was the 5th largest city in Michigan. In 2020, there were 123,851 people living there. The city is part of the Detroit Metropolitan Combined Statistial Area.

Ann Arbor was started in 1824. It is thought that the city is named after the wife, Ann, of one of the founders. The University of Michigan was moved to Ann Arbor in 1837. (Before that, the university had been in Detroit.) The city grew during the 1800s and 1900s. The only time the city did not grow was the Depression of 1873.

During the 1960s and 1970s, Ann Arbor was an important place for the Civil Rights Movement, the anti-Vietnam War movement, and for left-wing and liberal politics.

Today, Ann Arbor is home to the University of Michigan. The university is very important to the city because 30,000 people work for it. 12,000 of these workers work for the University of Michigan Health System, which are hospitals and clinics run by the university. Ann Arbor's economy is also very high-tech. High-tech companies come to the area because there are many graduates and a lot of research and development money at the university.

## Infobox (settlement)

- **name**: Ann Arbor, Michigan
- **settlement type**: City
- **nicknames**: A<sup>2</sup>, A2, Tree Town, People's Republic of Ann Arbor
- **image caption**: From top, left to right: the Ann Arbor skyline, a sunset in Ann Arbor, Saint Andrew's Episcopal Church, Huron River, and the 2019 Ann Arbor Art Fair
- **mapsize**: 250
- **map caption**: Interactive map of Ann Arbor
- **pushpin map**: Michigan#USA
- **pushpin relief**: yes
- **pushpin label**: Ann Arbor
- **subdivision type**: Country
- **subdivision type1**: U.S. state, State
- **subdivision type2**: List of counties in Michigan, County
- **subdivision name**: United States
- **subdivision name1**: Michigan
- **subdivision name2**: Washtenaw County, Michigan, Washtenaw
- **government type**: Council–manager
- **leader title**: Mayor
- **leader title1**: Administrator
- **leader title2**: Clerk
- **leader title3**: City council
- **established date**: 1824
- **established title**: Founded
- **established date1**: 1833 (village)
1851 (city)
- **established title1**: Incorporated
- **unit pref**: Imperial
- **area total sq mi**: 29.09
- **area total km2**: 75.35
- **area land sq mi**: 28.22
- **area land km2**: 73.10
- **area water sq mi**: 0.87
- **area water km2**: 2.25
- **population as of**: 2020 United States census, 2020
- **population total**: 123851
- **population rank**: List of United States cities by population, 231st in the United States
List of municipalities in Michigan, 5th in Michigan
- **population urban**: 317,689 (List of United States urban areas, US: 129th)
- **population density urban km2**: 855.0
- **population density urban sq mi**: 2,214.6
- **population metro**: 372258 (List of metropolitan statistical areas, US: 148th)
- **population density sq mi**: 4388.14
- **population density km2**: 1694.28
- **population demonym**: Ann Arborite
- **elevation m**: 256
- **elevation ft**: 840
- **timezone**: Eastern Time Zone, Eastern (EST)
- **utc offset**: −5
- **timezone dst**: Eastern Time Zone, EDT
- **utc offset dst**: −4
- **postal code type**: ZIP Code, ZIP code(s)
- **postal code**: 48103–48109, 48113
- **area code type**: North American Numbering Plan, Area code
- **area code**: Area code 734, 734
- **blank name**: Federal Information Processing Standard, FIPS code
- **blank info**: 26-03000
- **blank1 name**: Geographic Names Information System, GNIS feature ID
- **blank1 info**: 0620133
- **founder**: John Allen (pioneer), John Allen and Elisha Rumsey
- **named for**: The wives of the city's founders (both named Ann) and the Quercus macrocarpa, bur oak in the area
- **area urban km2**: 413.46
- **area urban sq mi**: 159.57
- **area metro sq mi**: 722
- **area metro km2**: 1,870
- **population density metro km2**: auto
- **population density metro sq mi**: auto