| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ann Arbor | 1 | 121,651 | 123,772 | -0.48% | 4,294 | 28 | City |
| Ypsilanti | 2 | 53,404 | 55,560 | -0.59% | 1,782 | 30 | Township |
| Pittsfield | 3 | 40,417 | 39,049 | 0.38% | 1,490 | 27 | Township |
| Ypsilanti | 4 | 19,591 | 20,577 | -0.89% | 4,563 | 4 | City |
| Scio | 5 | 18,934 | 17,542 | 1.81% | 591 | 32 | Township |
| Superior | 6 | 14,940 | 14,819 | 0.52% | 424 | 35 | Township |
| York | 7 | 9,162 | 9,100 | 0.35% | 264 | 35 | Township |
| Saline | 8 | 8,999 | 8,977 | -0.02% | 2,076 | 4 | City |
| Northfield | 9 | 8,756 | 8,544 | -0.33% | 245 | 36 | Township |
| Augusta | 10 | 7,393 | 7,108 | 0.65% | 201 | 37 | Township |
| Salem | 11 | 6,757 | 7,006 | -0.43% | 197 | 34 | Township |
| Dexter | 12 | 6,502 | 6,684 | -0.12% | 214 | 30 | Township |
| Webster | 13 | 6,474 | 6,575 | -0.17% | 186 | 35 | Township |
| Lodi | 14 | 6,281 | 6,414 | 0% | 183 | 34 | Township |
| Chelsea | 15 | 5,392 | 5,445 | -0.59% | 1,491 | 4 | City |
| Salem | 16 | 5,332 | 5,169 | 1.2% | 149 | 36 | Township |
| Manchester | 17 | 4,535 | 4,615 | -0.33% | 120 | 38 | Township |
| Ann Arbor | 18 | 4,478 | 4,637 | -0.62% | 274 | 16 | Township |
| Dexter | 19 | 4,454 | 4,493 | -0.16% | 2,292 | 2 | City |
| Lima | 20 | 4,324 | 4,029 | 2.59% | 125 | 35 | Township |
| Sylvan | 21 | 3,560 | 3,332 | 0.42% | 109 | 33 | Township |
| Saline | 22 | 2,902 | 2,269 | 6.11% | 84 | 35 | Township |
| Lyndon | 23 | 2,642 | 2,658 | -0.75% | 83 | 32 | Township |
| Manchester | 24 | 2,015 | 2,081 | -0.59% | 947 | 2 | Village |
| Sharon | 25 | 1,772 | 1,814 | -0.11% | 47 | 37 | Township |
| Bridgewater | 26 | 1,545 | 1,612 | -0.39% | 43 | 36 | Township |
| Freedom | 27 | 1,295 | 1,329 | -0.23% | 37 | 35 | Township |
| Barton Hills | 28 | 321 | 330 | -0.62% | 423 | 1 | Village |
Ann Arbor is the largest city in Washtenaw County, with a population of 121,651.
Barton Hills is the smallest city in Washtenaw County, with a population of 321.
There are 28 cities in Washtenaw County, Michigan.