29 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ann Arbor | 1 | 122,717 | 123,757 | -0.17% | 4,332 | 28 | City |
| Ypsilanti charter | 2 | 54,553 | 55,537 | -0.38% | 1,820 | 30 | Township |
| Pittsfield charter | 3 | 41,998 | 39,074 | 3.2% | 1,549 | 27 | Township |
| Ypsilanti | 4 | 20,036 | 20,605 | -0.57% | 4,667 | 4 | City |
| Scio | 5 | 19,411 | 17,542 | 4.8% | 606 | 32 | Township |
| Superior charter | 6 | 14,986 | 14,824 | -0.04% | 426 | 35 | Township |
| Northfield | 7 | 9,308 | 8,540 | 4.16% | 260 | 36 | Township |
| York charter | 8 | 9,273 | 9,110 | 0.48% | 267 | 35 | Township |
| Saline | 9 | 9,130 | 8,985 | 0.32% | 2,106 | 4 | City |
| Whitmore Lake | 10 | 8,283 | 8,010 | 1.52% | 1,727 | 5 | CDP |
| Augusta charter | 11 | 7,473 | 7,108 | 1% | 204 | 37 | Township |
| Salem | 12 | 6,900 | 7,006 | -0.13% | 201 | 34 | Township |
| Dexter | 13 | 6,591 | 6,688 | -0.3% | 217 | 30 | Township |
| Webster | 14 | 6,591 | 6,578 | 0.05% | 189 | 35 | Township |
| Lodi | 15 | 6,345 | 6,418 | -0.44% | 185 | 34 | Township |
| Chelsea | 16 | 5,378 | 5,450 | -0.28% | 1,487 | 4 | City |
| Salem | 17 | 5,193 | 5,166 | 0.19% | 145 | 36 | Township |
| Manchester | 18 | 4,628 | 4,616 | -0.04% | 122 | 38 | Township |
| Ann Arbor charter | 19 | 4,568 | 4,635 | -0.46% | 280 | 16 | Township |
| Dexter | 20 | 4,537 | 4,491 | 0.2% | 2,335 | 2 | City |
| Lima | 21 | 4,247 | 4,026 | 2.09% | 123 | 35 | Township |
| Sylvan | 22 | 3,612 | 3,331 | 0.92% | 111 | 33 | Township |
| Saline | 23 | 2,744 | 2,268 | 5.34% | 79 | 35 | Township |
| Lyndon | 24 | 2,720 | 2,654 | 0.26% | 85 | 32 | Township |
| Manchester | 25 | 2,051 | 2,074 | -0.24% | 964 | 2 | Village |
| Sharon | 26 | 1,794 | 1,812 | -0.22% | 48 | 37 | Township |
| Bridgewater | 27 | 1,573 | 1,612 | -0.32% | 43 | 36 | Township |
| Freedom | 28 | 1,314 | 1,328 | -0.45% | 37 | 35 | Township |
| Barton Hills | 29 | 322 | 329 | -0.62% | 424 | 1 | Village |
Ann Arbor is the largest city in Washtenaw County, with a population of 122,717.
Barton Hills is the smallest city in Washtenaw County, with a population of 322.
There are 29 cities in Washtenaw County, Michigan.