39 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Newark | 1 | 51,732 | 50,017 | 0.67% | 2,467 | 20.97 | City |
| Etna township | 2 | 19,813 | 18,910 | 0.83% | 851 | 23.28 | Township |
| Pataskala | 3 | 18,635 | 17,912 | 0.78% | 643 | 28.96 | City |
| Granville township | 4 | 11,456 | 10,275 | 3.46% | 445 | 25.74 | Township |
| Heath | 5 | 10,866 | 10,433 | 0.81% | 982 | 11.06 | City |
| Union township | 6 | 9,398 | 9,101 | 0.53% | 227 | 41.31 | Township |
| Granville | 7 | 6,495 | 5,959 | 1.68% | 1,351 | 4.81 | Village |
| Johnstown | 8 | 5,390 | 5,190 | 0.75% | 1,806 | 2.98 | Village |
| Licking township | 9 | 5,065 | 4,863 | 0.72% | 193 | 26.19 | Township |
| Granville township | 10 | 4,171 | 4,222 | -0.48% | 107 | 39.16 | Township |
| Newton township | 11 | 3,254 | 3,146 | 0.53% | 140 | 23.18 | Township |
| Hanover township | 12 | 3,171 | 3,039 | 0.76% | 128 | 24.78 | Township |
| Washington township | 13 | 3,139 | 3,038 | 0.54% | 134 | 23.49 | Township |
| Liberty township | 14 | 2,821 | 2,724 | 0.61% | 108 | 26.06 | Township |
| Jersey township | 15 | 2,675 | 2,569 | 0.68% | 99 | 27.12 | Township |
| St. Albans township | 16 | 2,621 | 2,540 | 0.5% | 100 | 26.23 | Township |
| Buckeye Lake | 17 | 2,584 | 2,518 | 0.51% | 1,309 | 1.97 | Village |
| Hebron | 18 | 2,420 | 2,329 | 0.75% | 817 | 2.96 | Village |
| Mary Ann township | 19 | 2,259 | 2,143 | 0.98% | 98 | 23.13 | Township |
| Newark township | 20 | 2,187 | 2,125 | 0.41% | 339 | 6.45 | Township |
| Utica | 21 | 2,144 | 2,071 | 0.7% | 1,229 | 1.75 | Village |
| Bennington township | 22 | 1,775 | 1,713 | 0.62% | 66 | 27.07 | Township |
| Harbor Hills | 23 | 1,666 | 1,548 | 0.6% | 605 | 2.75 | CDP |
| McKean township | 24 | 1,656 | 1,591 | 0.73% | 65 | 25.66 | Township |
| Homer township | 25 | 1,647 | 1,598 | 0.86% | 67 | 24.47 | Township |
| Hanover | 26 | 1,345 | 1,275 | 1.05% | 736 | 1.83 | Village |
| Eden township | 27 | 1,330 | 1,280 | 0.68% | 62 | 21.41 | Township |
| Burlington township | 28 | 1,254 | 1,214 | 0.48% | 49 | 25.52 | Township |
| Granville South | 29 | 1,107 | 1,243 | -1.86% | 182 | 6.09 | CDP |
| Fallsbury township | 30 | 1,037 | 996 | 0.78% | 42 | 24.83 | Township |
| Homer township | 31 | 977 | 983 | 0% | 26 | 37.64 | Township |
| Etna | 32 | 894 | 679 | -2.3% | 1,454 | 0.61 | CDP |
| Alexandria | 33 | 496 | 481 | 0.61% | 2,033 | 0.24 | Village |
| Kirkersville | 34 | 483 | 468 | 0.63% | 269 | 1.80 | Village |
| Brownsville | 35 | 418 | 237 | 3.47% | 469 | 0.89 | CDP |
| St. Louisville | 36 | 371 | 351 | 1.09% | 1,466 | 0.25 | Village |
| Jacksontown | 37 | 265 | 154 | 7.29% | 198 | 1.34 | CDP |
| Marne | 38 | 252 | 482 | -12.2% | 287 | 0.88 | CDP |
| Gratiot | 39 | 217 | 214 | 0.46% | 1,619 | 0.13 | Village |
Newark is the largest city in Licking County, with a population of 51,732.
Gratiot is the smallest city in Licking County.
There are 39 cities in Licking County, Ohio.