15 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Circleville | 1 | 14,553 | 13,952 | 0.83% | 2,017 | 7 | City |
| Scioto | 2 | 12,048 | 11,719 | 1.17% | 272 | 44 | Township |
| Ashville | 3 | 4,809 | 4,552 | 1.07% | 1,942 | 2 | Village |
| Darby | 4 | 3,423 | 3,217 | 1.72% | 100 | 34 | Township |
| Commercial Point | 5 | 3,253 | 3,092 | 0.99% | 698 | 5 | Village |
| Washington | 6 | 3,166 | 3,006 | 1.54% | 133 | 24 | Township |
| Walnut | 7 | 3,120 | 2,958 | 1.6% | 77 | 41 | Township |
| Saltcreek | 8 | 2,892 | 2,746 | 1.51% | 81 | 36 | Township |
| Circleville | 9 | 2,664 | 2,529 | 1.56% | 283 | 9 | Township |
| Pickaway | 10 | 2,135 | 2,031 | 1.47% | 44 | 49 | Township |
| Deercreek | 11 | 1,687 | 1,600 | 1.57% | 47 | 36 | Township |
| Williamsport | 12 | 1,025 | 978 | 0.89% | 577 | 2 | Village |
| Muhlenberg | 13 | 871 | 833 | 1.28% | 38 | 23 | Township |
| New Holland | 14 | 837 | 806 | 0.72% | 532 | 2 | Village |
| Tarlton | 15 | 268 | 255 | 0.75% | 698 | 0 | Village |
Circleville is the largest city in Pickaway County, with a population of 14,553.
Tarlton is the smallest city in Pickaway County, with a population of 268.
There are 15 cities in Pickaway County, Ohio.