| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Coldwater | 1 | 14,427 | 13,414 | 1.48% | 1,531 | 9 | City |
| Quincy | 2 | 4,140 | 4,112 | 0% | 117 | 35 | Township |
| Coldwater | 3 | 3,859 | 3,830 | 0% | 149 | 26 | Township |
| Bronson | 4 | 2,318 | 2,310 | 0.09% | 1,696 | 1 | City |
| Algansee | 5 | 2,048 | 2,031 | 0.05% | 58 | 36 | Township |
| Sherwood | 6 | 1,985 | 1,960 | 0.1% | 57 | 35 | Township |
| Girard | 7 | 1,768 | 1,756 | 0% | 50 | 35 | Township |
| Union City | 8 | 1,728 | 1,723 | 0.12% | 1,196 | 1 | Village |
| Quincy | 9 | 1,565 | 1,557 | 0.06% | 1,003 | 2 | Village |
| Bethel | 10 | 1,471 | 1,427 | 0.34% | 41 | 36 | Township |
| Kinderhook | 11 | 1,456 | 1,425 | 0.28% | 75 | 19 | Township |
| Butler | 12 | 1,412 | 1,409 | -0.21% | 40 | 36 | Township |
| Batavia | 13 | 1,333 | 1,313 | 0.08% | 37 | 36 | Township |
| Bronson | 14 | 1,308 | 1,288 | 0.15% | 38 | 35 | Township |
| Matteson | 15 | 1,196 | 1,177 | 0.08% | 33 | 36 | Township |
| California | 16 | 1,191 | 1,178 | 0.08% | 56 | 21 | Township |
| Coldwater | 17 | 819 | 802 | -0.12% | 23 | 36 | Township |
| Gilead | 18 | 662 | 655 | 0.15% | 31 | 21 | Township |
| Noble | 19 | 462 | 455 | 0.22% | 22 | 21 | Township |
| Montgomery | 20 | 317 | 319 | -0.31% | 317 | 1 | Village |
| Quincy | 21 | 312 | 306 | 0.65% | 86 | 4 | Township |
| Sherwood | 22 | 286 | 284 | 0% | 285 | 1 | Village |
Coldwater is the largest city in Branch County, with a population of 14,427.
Sherwood is the smallest city in Branch County, with a population of 286.
There are 22 cities in Branch County, Michigan.