40 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Brookfield | 1 | 4,784 | 4,729 | 0.91% | 107 | 45 | Township |
| Brookfield | 2 | 4,784 | 4,722 | 0.91% | 107 | 45 | Township |
| Brookfield | 3 | 4,113 | 4,102 | 0.07% | 946 | 4 | City |
| Brookfield | 4 | 4,113 | 4,096 | 0.07% | 946 | 4 | City |
| Marceline | 5 | 2,631 | 2,607 | 0.77% | 87 | 30 | Township |
| Marceline | 6 | 2,631 | 2,602 | 0.77% | 87 | 30 | Township |
| Marceline | 7 | 2,131 | 2,129 | 0.05% | 649 | 3 | City |
| Marceline | 8 | 2,131 | 2,125 | 0.05% | 649 | 3 | City |
| Parson Creek | 9 | 786 | 774 | 0.9% | 14 | 56 | Township |
| Parson Creek | 10 | 786 | 772 | 0.9% | 14 | 56 | Township |
| Jefferson | 11 | 682 | 673 | 0.89% | 12 | 56 | Township |
| Jefferson | 12 | 682 | 672 | 0.89% | 12 | 56 | Township |
| Bucklin | 13 | 642 | 636 | 0.78% | 14 | 44 | Township |
| Bucklin | 14 | 642 | 635 | 0.78% | 14 | 44 | Township |
| Locust Creek | 15 | 538 | 530 | 1.13% | 11 | 49 | Township |
| Locust Creek | 16 | 538 | 530 | 1.13% | 11 | 49 | Township |
| Meadville | 17 | 420 | 416 | 0.24% | 778 | 1 | City |
| Meadville | 18 | 420 | 415 | 0.24% | 778 | 1 | City |
| Bucklin | 19 | 412 | 411 | 0% | 349 | 1 | City |
| Bucklin | 20 | 412 | 410 | 0% | 349 | 1 | City |
| Yellow Creek | 21 | 357 | 352 | 0.85% | 10 | 37 | Township |
| Yellow Creek | 22 | 357 | 352 | 0.85% | 10 | 37 | Township |
| Clay | 23 | 310 | 305 | 0.98% | 6 | 50 | Township |
| Clay | 24 | 310 | 305 | 0.98% | 6 | 50 | Township |
| Laclede | 25 | 302 | 302 | 0% | 242 | 1 | City |
| Laclede | 26 | 302 | 302 | 0% | 242 | 1 | City |
| Linneus | 27 | 280 | 278 | 0% | 263 | 1 | City |
| Linneus | 28 | 280 | 278 | 0% | 263 | 1 | City |
| Grantsville | 29 | 264 | 259 | 1.15% | 6 | 46 | Township |
| Grantsville | 30 | 264 | 259 | 1.15% | 6 | 46 | Township |
| Browning | 31 | 216 | 218 | -0.46% | 413 | 1 | City |
| Browning | 32 | 216 | 218 | -0.46% | 413 | 1 | City |
| Baker | 33 | 187 | 185 | 0.54% | 4 | 46 | Township |
| Baker | 34 | 187 | 185 | 0.54% | 4 | 46 | Township |
| Purdin | 35 | 138 | 140 | -0.72% | 451 | 0 | City |
| Purdin | 36 | 138 | 140 | -0.72% | 451 | 0 | City |
| North Salem | 37 | 115 | 113 | 0.88% | 3 | 44 | Township |
| North Salem | 38 | 115 | 113 | 0.88% | 3 | 44 | Township |
| Enterprise | 39 | 84 | 80 | 2.44% | 3 | 25 | Township |
| Enterprise | 40 | 84 | 80 | 2.44% | 3 | 25 | Township |
Brookfield is the largest city in Linn County, with a population of 4,784.
Enterprise is the smallest city in Linn County, with a population of 84.
There are 40 cities in Linn County, Missouri.