| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Monroe City | 1 | 2,723 | 2,660 | 0.33% | 902 | 3 | City |
| Paris | 2 | 1,183 | 1,155 | 0.42% | 937 | 1 | City |
| Madison | 3 | 537 | 521 | 0.37% | 1,199 | 0 | City |
| Holliday | 4 | 119 | 114 | 0% | 456 | 0 | Village |
| Stoutsville | 5 | 39 | 37 | 0% | 47 | 1 | Village |
Monroe City is the largest city in Monroe County, with a population of 2,723.
Stoutsville is the smallest city in Monroe County, with a population of 39.
There are 5 cities in Monroe County, Missouri.