37 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Flint | 1 | 79,391 | 81,109 | -0.43% | 2,374 | 33 | City |
| Grand Blanc charter | 2 | 40,197 | 39,882 | 0.35% | 1,230 | 33 | Township |
| Flint charter | 3 | 30,965 | 31,397 | 0.01% | 1,341 | 23 | Township |
| Burton | 4 | 29,357 | 29,669 | -0.21% | 1,257 | 23 | City |
| Davison | 5 | 20,494 | 20,449 | 0.27% | 615 | 33 | Township |
| Genesee charter | 6 | 20,300 | 20,543 | 0.08% | 699 | 29 | Township |
| Mount Morris | 7 | 19,613 | 19,977 | -0.03% | 622 | 32 | Township |
| Fenton charter | 8 | 17,343 | 16,889 | 0.61% | 728 | 24 | Township |
| Mundy | 9 | 15,492 | 15,291 | 0.49% | 430 | 36 | Township |
| Vienna charter | 10 | 13,055 | 13,288 | -0.06% | 373 | 35 | Township |
| Fenton | 11 | 11,845 | 12,029 | -0.31% | 1,781 | 7 | City |
| Flushing charter | 12 | 10,612 | 10,682 | 0.21% | 338 | 31 | Township |
| Richfield | 13 | 8,971 | 8,986 | 0.04% | 256 | 35 | Township |
| Beecher | 14 | 8,798 | 9,168 | -1.08% | 1,496 | 6 | CDP |
| Atlas | 15 | 8,306 | 8,336 | 0.19% | 236 | 35 | Township |
| Flushing | 16 | 8,182 | 8,392 | -0.51% | 2,266 | 4 | City |
| Grand Blanc | 17 | 7,885 | 8,078 | -0.49% | 2,183 | 4 | City |
| Clayton charter | 18 | 7,354 | 7,453 | -0.01% | 215 | 34 | Township |
| Argentine | 19 | 7,034 | 7,069 | 0.26% | 203 | 35 | Township |
| Gaines | 20 | 6,647 | 6,659 | 0.21% | 189 | 35 | Township |
| Lake Fenton | 21 | 6,505 | 5,631 | 0.98% | 1,179 | 6 | CDP |
| Thetford | 22 | 6,505 | 6,620 | -0.05% | 188 | 35 | Township |
| Montrose charter | 23 | 5,952 | 5,996 | 0.15% | 174 | 34 | Township |
| Swartz Creek | 24 | 5,838 | 5,887 | -0.17% | 1,393 | 4 | City |
| Davison | 25 | 5,042 | 5,127 | -0.34% | 2,539 | 2 | City |
| Forest | 26 | 4,374 | 4,442 | 0.02% | 123 | 36 | Township |
| Linden | 27 | 4,195 | 4,145 | 0.24% | 1,781 | 2 | City |
| Mount Morris | 28 | 3,077 | 3,164 | -0.58% | 2,680 | 1 | City |
| Clio | 29 | 2,463 | 2,522 | -0.48% | 2,223 | 1 | City |
| Argentine | 30 | 2,433 | 2,409 | -0.25% | 1,027 | 2 | CDP |
| Goodrich | 31 | 2,015 | 2,020 | -0.05% | 918 | 2 | Village |
| Montrose | 32 | 1,700 | 1,740 | -0.47% | 1,740 | 1 | City |
| Otisville | 33 | 804 | 817 | -0.37% | 913 | 1 | Village |
| Barnes Lake | 34 | 778 | 651 | 7.16% | 503 | 2 | CDP |
| Millers Lake | 35 | 564 | 656 | 7.22% | 374 | 2 | CDP |
| Lennon | 36 | 469 | 478 | -0.42% | 514 | 1 | Village |
| Gaines | 37 | 373 | 376 | -0.27% | 997 | 0 | Village |
Flint is the largest city in Genesee County, with a population of 79,391.
Gaines is the smallest city in Genesee County, with a population of 373.
There are 37 cities in Genesee County, Michigan.