Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Byron township | 1 | 28,017 | 27,028 | 0.69% | 778 | 36.0 | Township |
| Owosso | 2 | 14,543 | 14,695 | -0.26% | 2,771 | 5.2 | City |
| Owosso charter township | 3 | 4,799 | 4,766 | 0.17% | 152 | 31.7 | Township |
| Caledonia charter township | 4 | 4,337 | 4,346 | 0.07% | 139 | 31.1 | Township |
| Vernon township | 5 | 4,337 | 4,279 | 0.53% | 128 | 33.8 | Township |
| Perry township | 6 | 4,199 | 4,157 | 0.26% | 133 | 31.6 | Township |
| Woodhull township | 7 | 3,712 | 3,680 | 0.3% | 145 | 25.5 | Township |
| Durand | 8 | 3,460 | 3,498 | -0.29% | 1,772 | 2.0 | City |
| Burns township | 9 | 3,286 | 3,274 | 0.21% | 93 | 35.3 | Township |
| Bennington township | 10 | 3,126 | 3,109 | 0.22% | 88 | 35.6 | Township |
| Corunna | 11 | 3,014 | 3,044 | -0.27% | 947 | 3.2 | City |
| Shiawassee township | 12 | 2,743 | 2,733 | 0.18% | 75 | 36.4 | Township |
| Venice township | 13 | 2,443 | 2,421 | 0.29% | 65 | 37.4 | Township |
| Perry | 14 | 2,145 | 2,069 | 0.89% | 853 | 2.5 | City |
| Antrim township | 15 | 2,119 | 2,109 | 0.24% | 60 | 35.3 | Township |
| Hazelton township | 16 | 2,046 | 2,051 | 0% | 55 | 37.3 | Township |
| Sciota township | 17 | 1,688 | 1,688 | 0.06% | 67 | 25.2 | Township |
| Middlebury township | 18 | 1,537 | 1,528 | 0.26% | 62 | 24.6 | Township |
| Laingsburg | 19 | 1,409 | 1,428 | -0.35% | 888 | 1.6 | City |
| Vernon township | 20 | 1,313 | 1,302 | -0.15% | 37 | 35.3 | Township |
| Rush township | 21 | 1,264 | 1,264 | 0.08% | 36 | 34.9 | Township |
| Morrice | 22 | 999 | 966 | 0.81% | 767 | 1.3 | Village |
| Vernon | 23 | 721 | 732 | -0.41% | 724 | 1.0 | Village |
| New Lothrop | 24 | 581 | 588 | -0.34% | 672 | 0.9 | Village |
| Byron | 25 | 526 | 532 | -0.38% | 745 | 0.7 | Village |
| Bancroft | 26 | 479 | 478 | 0% | 809 | 0.6 | Village |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Byron township is the largest city in Shiawassee County.
Bancroft is the smallest city in Shiawassee County.
There are 26 cities in Shiawassee County, Michigan.