28 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ann Arbor | 1 | 122,509 | 123,757 | -0.17% | 4,324 | 28 | City |
| Ypsilanti charter | 2 | 54,346 | 55,537 | -0.38% | 1,813 | 30 | Township |
| Pittsfield charter | 3 | 43,299 | 39,074 | 3.1% | 1,597 | 27 | Township |
| Scio | 4 | 20,300 | 17,542 | 4.58% | 634 | 32 | Township |
| Ypsilanti | 5 | 19,922 | 20,605 | -0.57% | 4,641 | 4 | City |
| Superior charter | 6 | 14,980 | 14,824 | -0.04% | 425 | 35 | Township |
| Northfield | 7 | 9,680 | 8,540 | 4% | 271 | 36 | Township |
| York charter | 8 | 9,317 | 9,110 | 0.47% | 268 | 35 | Township |
| Saline | 9 | 9,159 | 8,985 | 0.32% | 2,113 | 4 | City |
| Augusta charter | 10 | 7,547 | 7,108 | 0.99% | 206 | 37 | Township |
| Salem | 11 | 6,891 | 7,006 | -0.13% | 201 | 34 | Township |
| Webster | 12 | 6,594 | 6,578 | 0.05% | 189 | 35 | Township |
| Dexter | 13 | 6,571 | 6,688 | -0.3% | 217 | 30 | Township |
| Lodi | 14 | 6,317 | 6,418 | -0.44% | 184 | 34 | Township |
| Chelsea | 15 | 5,364 | 5,450 | -0.26% | 1,483 | 4 | City |
| Salem | 16 | 5,203 | 5,166 | 0.19% | 146 | 36 | Township |
| Manchester | 17 | 4,626 | 4,616 | -0.04% | 122 | 38 | Township |
| Ann Arbor charter | 18 | 4,547 | 4,635 | -0.46% | 278 | 16 | Township |
| Dexter | 19 | 4,546 | 4,491 | 0.2% | 2,340 | 2 | City |
| Lima | 20 | 4,334 | 4,026 | 2.05% | 125 | 35 | Township |
| Sylvan | 21 | 3,645 | 3,331 | 0.91% | 112 | 33 | Township |
| Saline | 22 | 2,883 | 2,268 | 5.07% | 83 | 35 | Township |
| Lyndon | 23 | 2,727 | 2,654 | 0.26% | 85 | 32 | Township |
| Manchester | 24 | 2,047 | 2,074 | -0.2% | 962 | 2 | Village |
| Sharon | 25 | 1,790 | 1,812 | -0.22% | 48 | 37 | Township |
| Bridgewater | 26 | 1,568 | 1,612 | -0.32% | 43 | 36 | Township |
| Freedom | 27 | 1,308 | 1,328 | -0.46% | 37 | 35 | Township |
| Barton Hills | 28 | 321 | 329 | -0.31% | 423 | 1 | Village |
Ann Arbor is the largest city in Washtenaw County, with a population of 122,509.
Barton Hills is the smallest city in Washtenaw County, with a population of 321.
There are 28 cities in Washtenaw County, Michigan.