39 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Newark | 1 | 51,769 | 50,041 | 0.67% | 2,468 | 21 | City |
| Etna | 2 | 20,334 | 18,911 | 2.04% | 873 | 23 | Township |
| Pataskala | 3 | 18,637 | 17,915 | 0.78% | 643 | 29 | City |
| Heath | 4 | 10,911 | 10,465 | 0.82% | 986 | 11 | City |
| Granville | 5 | 10,790 | 10,271 | 0.42% | 419 | 26 | Township |
| Union | 6 | 9,421 | 9,101 | 0.56% | 228 | 41 | Township |
| Granville | 7 | 6,395 | 5,958 | 1.38% | 1,330 | 5 | Village |
| Johnstown | 8 | 5,396 | 5,193 | 0.75% | 1,808 | 3 | Village |
| Licking | 9 | 5,015 | 4,826 | 0.64% | 191 | 26 | Township |
| Granville | 10 | 4,236 | 4,222 | 0.28% | 108 | 39 | Township |
| Newton | 11 | 3,239 | 3,125 | 0.53% | 140 | 23 | Township |
| Hanover | 12 | 3,212 | 3,038 | 1.32% | 130 | 25 | Township |
| Washington | 13 | 3,143 | 3,038 | 0.51% | 134 | 23 | Township |
| Liberty | 14 | 2,814 | 2,716 | 0.54% | 108 | 26 | Township |
| Jersey | 15 | 2,678 | 2,570 | 0.64% | 99 | 27 | Township |
| St. Albans | 16 | 2,632 | 2,543 | 0.57% | 100 | 26 | Township |
| Buckeye Lake | 17 | 2,588 | 2,520 | 0.5% | 1,311 | 2 | Village |
| Hebron | 18 | 2,425 | 2,329 | 0.79% | 819 | 3 | Village |
| Mary Ann | 19 | 2,269 | 2,143 | 0.98% | 98 | 23 | Township |
| Newark | 20 | 2,180 | 2,106 | 0.55% | 338 | 6 | Township |
| Utica | 21 | 2,146 | 2,071 | 0.7% | 1,230 | 2 | Village |
| Bennington | 22 | 1,777 | 1,713 | 0.57% | 66 | 27 | Township |
| Harbor Hills | 23 | 1,666 | 1,548 | 0.6% | 605 | 3 | CDP |
| McKean | 24 | 1,657 | 1,595 | 0.61% | 65 | 26 | Township |
| Homer | 25 | 1,631 | 1,597 | 0.49% | 67 | 24 | Township |
| Hanover | 26 | 1,370 | 1,272 | 1.41% | 750 | 2 | Village |
| Eden | 27 | 1,339 | 1,284 | 0.68% | 63 | 21 | Township |
| Burlington | 28 | 1,261 | 1,215 | 0.64% | 49 | 26 | Township |
| Granville South | 29 | 1,107 | 1,243 | -1.86% | 182 | 6 | CDP |
| Fallsbury | 30 | 1,030 | 996 | 0.49% | 41 | 25 | Township |
| Homer | 31 | 957 | 982 | -0.73% | 25 | 38 | Township |
| Etna | 32 | 894 | 679 | -2.3% | 1,454 | 1 | CDP |
| Alexandria | 33 | 499 | 486 | 0.4% | 2,045 | 0 | Village |
| Kirkersville | 34 | 481 | 468 | 0.42% | 268 | 2 | Village |
| Brownsville | 35 | 418 | 237 | 3.47% | 469 | 1 | CDP |
| St. Louisville | 36 | 368 | 351 | 0.82% | 1,455 | 0 | Village |
| Jacksontown | 37 | 265 | 154 | 7.29% | 198 | 1 | CDP |
| Marne | 38 | 252 | 482 | -12.2% | 287 | 1 | CDP |
| Gratiot | 39 | 217 | 214 | 0% | 1,619 | 0 | Village |
Newark is the largest city in Licking County, with a population of 51,769.
Gratiot is the smallest city in Licking County, with a population of 217.
There are 39 cities in Licking County, Ohio.