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Ann Arbor Charter Township, Michigan facts for kids

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Ann Arbor Charter Township
Charter township
Township hall and fire station
Official seal of Ann Arbor Charter Township
Country United States
State Michigan
County Washtenaw
 • Total 16.9 sq mi (43.7 km2)
 • Land 16.7 sq mi (43.3 km2)
 • Water 0.2 sq mi (0.4 km2)
945 ft (288 m)
 • Total 4,361
 • Density 258.5/sq mi (99.79/km2)
Time zone UTC-5 (Eastern (EST))
 • Summer (DST) UTC-4 (EDT)
Area code(s) 734
FIPS code 26-03020
GNIS feature ID 1625838

Ann Arbor Charter Township is a charter township of Washtenaw County in the U.S. state of Michigan. As of the 2010 census, the township population was 4,361. The city of Ann Arbor is adjacent to the township on the south and west sides. Small islands of the township also lie within the boundaries of the city of Ann Arbor. Under a 1994 boundary agreement with the city of Ann Arbor, eventually all of these islands will be permitted to be annexed by the city.


The Township of Ann Arbour was organized in 1827 by the Legislative Council of the Michigan Territory and the Village of Ann Arbour, which later became the City of Ann Arbor, was organized in 1833. As villages remain part of the township, the village of Ann Arbour did not become completely detached from the township until it reorganized as the city of Ann Arbor.

The now defunct unincorporated community of Osmer lay in the township. The town was a stop on the Tuscola and Saginaw Bay Railway. Another community Cornwell centered around Cornwell Mills, was begun in the township in 1877.


According to the United States Census Bureau, the township has a total area of 16.9 square miles (43.7 km2), of which 16.7 square miles (43.3 km2) is land and 0.15 square miles (0.4 km2), or 0.86%, is water. The city of Ann Arbor was established within the borders of Ann Arbor Township. Over the years, the city expanded, annexing portions of the township as the city grew and reducing the land area of the township. Under a 1994 boundary agreement with the City of Ann Arbor, those areas of the Township lying within the future boundaries of the city will be subject to annexation by the city.

To the east of Ann Arbor Township lies Superior Township, to the west lies Scio Township, to the south lies Pittsfield Township, and to the north lies Northfield Township.


As of the census of 2000, there were 4,720 people, 1,972 households, and 1,317 families residing in the township. The population density was 267.5 per square mile (103.3/km²). There were 2,034 housing units at an average density of 115.3 per square mile (44.5/km²). The racial makeup of the township was 81.21% White, 2.25% African American, 0.17% Native American, 13.58% Asian, 0.06% Pacific Islander, 0.85% from other races, and 1.89% from two or more races. Hispanic or Latino of any race were 2.22% of the population.

There were 1,972 households out of which 27.7% had children under the age of 18 living with them, 61.0% were married couples living together, 4.4% had a female householder with no husband present, and 33.2% were non-families. 26.7% of all households were made up of individuals and 4.8% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.84.

In the township the population was spread out with 21.1% under the age of 18, 4.6% from 18 to 24, 30.9% from 25 to 44, 28.1% from 45 to 64, and 15.2% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 95.4 males. For every 100 females age 18 and over, there were 93.7 males.

The median income for a household in the township was $86,797, and the median income for a family was $103,102. Males had a median income of $75,176 versus $45,320 for females. The per capita income for the township was $56,084. About 1.2% of families and 3.2% of the population were below the poverty line, including 1.7% of those under age 18 and 1.6% of those age 65 or over.


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