Washtenaw County, Michigan
Washtenaw County: county in Michigan, United States
About
Washtenaw County is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 344,791 and a population density of 184 people per km². After 10 years in 2020 county had an estimated population of 366,473 inhabitants. Its county seat is Ann Arbor. The county was created 204 years ago in 1821.
County Snapshot
Washtenaw County at a glance
Washtenaw County currently has 14 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
14
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Michigan counties
83
Open related pagesLargest city
Ann ArborPopulation 119,280
Top linked places
Quick Facts about Washtenaw County
| Population | 366,473 (2020) |
| Country | United States of America |
| State | Michigan (United States) |
| Area | 1871 km2 |
| Water as percent of area | 2.3% |
| Land as percent of area | 97.7% |
| Latitude & Longitude | 42.2532,-83.8388 |
| Altitude | 938 feet / 286 meters |
| Capital | Ann Arbor |
| Establishment | January 01, 1822 |
| Time Zone | America/Detroit |
| Local time | 19:59:55 (18th April 2026) |
| Density | 196 Pop. per km² as of 2020 |
| Population growth | 5.92% (2010-2020) |
| Weather | 67℉ Showers And Thunderstorms 7-days weather |
Geography
Washtenaw County is located at 42°15'12"N 83°50'20"W (42.2532300, -83.8387700). It has 3 neighbors: Lenawee County, Livingston County and Monroe County.
Washtenaw County map
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The largest city of Washtenaw County is Ann Arbor with a population of 119,280. Other cities include, Ypsilanti population 19,940, Dexter population 6,503, Chelsea population 5,377 and Manchester population 2,575. See all Washtenaw County cities & populated places.
Washtenaw County Populated Places
Cities, towns, neighborhoods & other populated places in Washtenaw County.
| City Name | Population | Title |
|---|---|---|
| Ann Arbor | 119,280 | The most populous city in Washtenaw County, Michigan. |
| Ypsilanti | 19,940 | City in Washtenaw County, Michigan, United States |
| Scio | 17,908 | Township in Michigan |
| Northfield | 8,640 | Township in Washtenaw County, Michigan |
| Webster | 6,798 | Township in Washtenaw County, Michigan |
| Dexter | 6,503 | Village in Michigan, United States |
| Salem | 6,464 | Township in Washtenaw County, Michigan |
| Chelsea | 5,377 | City in Washtenaw County, Michigan, United States of America |
| Benton | 2,841 | Charter township in Berrien County, Michigan |
| Manchester | 2,575 | Village in Michigan |
| Saline | 2,254 | City in Washtenaw County, Michigan, United States |
| Bridgewater | 1,714 | Township in Michigan |
| Foster | 811 | Township in Ogemaw County, Michigan |
| Barton Hills | 303 | City in Washtenaw County, Michigan, United States of America |
Weather
Showers and thunderstorms. Mostly cloudy, with a high near 67. West southwest wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation...
7-Day ForecastOfficial website of Washtenaw County
Official Website- Ann Arbor
Demographics
The population of Washtenaw County increased by 5.92% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 344,791 | - | census |
| 2011 | 349,753 | 1.42% | estimation process |
| 2012 | 352,303 | 0.72% | estimation process |
| 2013 | 356,040 | 1.05% | estimation process |
| 2014 | 360,021 | 1.11% | estimation process |
| 2015 | 362,975 | 0.81% | estimation process |
| 2016 | 366,135 | 0.86% | estimation process |
| 2017 | 368,807 | 0.72% | estimation process |
| 2018 | 369,483 | 0.18% | estimation process |
| 2019 | 367,601 | -0.51% | estimation process |
| 2020 | 366,473 | -0.31% | estimation process |
People born in Washtenaw County (5)
People born in Washtenaw County, including cartoonist Dave Coverly, musical instrument builder John Challis, businessman Frank J. Hecker, .
More notable people
- Mark Ouimet (American politician)
- John G. K. Ayers (Recipient of the Medal of Honor) he was born in 01/01/1837
Michigan Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Wayne County | 1,740,623 | County in Michigan, United States |
| Oakland County | 1,253,459 | County in Michigan, United States |
| Macomb County | 870,791 | County in Michigan, United States |
| Detroit | 665,369 | The twenty-fourth most populous city in the United States and the center of the Detroit metropolitan area. |
| Kent County | 658,708 | County in Michigan, United States |
| Genesee County | 404,794 | County in Michigan, United States |
| Ottawa County | 294,635 | County in Michigan, United States |
| Ingham County | 290,609 | County in Michigan, United States |
| Kalamazoo County | 265,988 | County in Michigan, United States |
| Grand Rapids | 200,031 | The second most populous city in Michigan. |
| Livingston County | 192,335 | County in Michigan, United States |
| Saginaw County | 189,868 | County in Michigan, United States |
| Muskegon County | 173,883 | County in Michigan, United States |
| Saint Clair County | 159,293 | County in Alabama, United States |
| Jackson County | 156,920 | County in Michigan, United States |
| Berrien County | 153,025 | County in Michigan, United States |