19 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 |
| Pataskala | 2 | 18,635 | 17,912 | 0.78% | 643 | 28.96 | City |
| Heath | 3 | 10,866 | 10,433 | 0.81% | 982 | 11.06 | City |
| Granville | 4 | 6,495 | 5,959 | 1.68% | 1,351 | 4.81 | Village |
| Johnstown | 5 | 5,390 | 5,190 | 0.75% | 1,806 | 2.98 | Village |
| Buckeye Lake | 6 | 2,584 | 2,518 | 0.51% | 1,309 | 1.97 | Village |
| Hebron | 7 | 2,420 | 2,329 | 0.75% | 817 | 2.96 | Village |
| Utica | 8 | 2,144 | 2,071 | 0.7% | 1,229 | 1.75 | Village |
| Harbor Hills | 9 | 1,666 | 1,548 | 0.6% | 605 | 2.75 | CDP |
| Hanover | 10 | 1,345 | 1,275 | 1.05% | 736 | 1.83 | Village |
| Granville South | 11 | 1,107 | 1,243 | -1.86% | 182 | 6.09 | CDP |
| Etna | 12 | 894 | 679 | -2.3% | 1,454 | 0.61 | CDP |
| Alexandria | 13 | 496 | 481 | 0.61% | 2,033 | 0.24 | Village |
| Kirkersville | 14 | 483 | 468 | 0.63% | 269 | 1.80 | Village |
| Brownsville | 15 | 418 | 237 | 3.46% | 469 | 0.89 | CDP |
| St. Louisville | 16 | 371 | 351 | 1.09% | 1,466 | 0.25 | Village |
| Jacksontown | 17 | 265 | 154 | 7.29% | 198 | 1.34 | CDP |
| Marne | 18 | 252 | 482 | -12.2% | 287 | 0.88 | CDP |
| Gratiot | 19 | 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 19 cities in Licking County, Ohio.