Total Population in Washtenaw County, MI
ACS 2024 5-Year Estimates
369,822
Rank #204/3,222 · #6 in MI
94th
Washtenaw 369,822
MI 10M -96.3%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Washtenaw County's total population of 369,822 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to Washtenaw County for total population.
Nearby Rankings
Full ranking →| #201 | Orleans Parish, LA | 371,853 |
| #202 | Davis County, UT | 370,924 |
| #203 | Anoka County, MN | 370,349 |
| #204 | Washtenaw County, MI | 369,822 |
| #205 | Larimer County, CO | 367,368 |
| #206 | Hamilton County, IN | 365,056 |
| #207 | Rutherford County, TN | 360,646 |
About Total Population
Washtenaw County, Michigan has a total population of 369,822, ranking #204 of 3,222 counties nationwide — 99.9% below the national value of 330M. Within Michigan, it ranks #6 of 83. This places it in the 94th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.