17 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Troy | 1 | 15,781 | 12,805 | 3.92% | 2,044 | 8 | City |
| Moscow Mills | 2 | 4,410 | 3,427 | 4.68% | 1,400 | 3 | City |
| Elsberry | 3 | 2,123 | 1,943 | 1.72% | 1,405 | 2 | City |
| Winfield | 4 | 1,653 | 1,525 | 1.6% | 1,947 | 1 | City |
| Flint Hill | 5 | 870 | 810 | 1.4% | 310 | 3 | City |
| Hawk Point | 6 | 767 | 689 | 2.13% | 1,848 | 0 | City |
| Innsbrook | 7 | 673 | 587 | 2.59% | 66 | 10 | Village |
| Old Monroe | 8 | 281 | 251 | 2.18% | 776 | 0 | City |
| Silex | 9 | 274 | 248 | 1.86% | 951 | 0 | City |
| Fountain N' Lakes | 10 | 195 | 170 | 2.63% | 1,512 | 0 | Village |
| Chain Rocks | 11 | 108 | 98 | 1.89% | 587 | 0 | Village |
| Foley | 12 | 107 | 92 | 2.88% | 546 | 0 | City |
| St. Clement | 13 | 105 | 86 | 7.14% | 380 | 0 | CDP |
| Truxton | 14 | 70 | 62 | 2.94% | 264 | 0 | Village |
| Whiteside | 15 | 63 | 58 | 1.61% | 606 | 0 | Village |
| Ashley | 16 | 44 | 57 | 7.32% | 33 | 1 | CDP |
| Pendleton | 17 | 38 | 35 | 2.7% | 125 | 0 | Village |
Troy is the largest city in Lincoln County, with a population of 15,781.
Pendleton is the smallest city in Lincoln County, with a population of 38.
There are 17 cities in Lincoln County, Missouri.