29 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Amelia | 1 | 15,485 | 10,308 | 7.14% | 2,798 | 5.54 | CDP |
| Loveland | 2 | 13,058 | 13,302 | -0.37% | 2,463 | 5.30 | City |
| Montgomery | 3 | 10,766 | 10,853 | -0.16% | 2,029 | 5.31 | City |
| Withamsville | 4 | 7,999 | 7,754 | 0.83% | 2,557 | 3.13 | CDP |
| Dry Run | 5 | 7,451 | 8,200 | 0.15% | 1,566 | 4.76 | CDP |
| Milford | 6 | 6,361 | 6,570 | -0.66% | 1,714 | 3.71 | City |
| The Village Indian Hill | 7 | 5,974 | 6,084 | -0.37% | 306 | 19.51 | City |
| Mount Carmel | 8 | 4,970 | 4,813 | 0.32% | 2,716 | 1.83 | CDP |
| Summerside | 9 | 4,373 | 4,352 | -1.06% | 2,119 | 2.06 | CDP |
| Mulberry | 10 | 4,258 | 4,210 | 1.48% | 2,656 | 1.60 | CDP |
| Cherry Grove | 11 | 4,118 | 4,237 | -0.41% | 3,638 | 1.13 | CDP |
| Mount Repose | 12 | 3,522 | 3,661 | -2.14% | 1,716 | 2.05 | CDP |
| New Richmond | 13 | 2,796 | 2,728 | 0.5% | 792 | 3.53 | Village |
| Bethel | 14 | 2,683 | 2,623 | 0.45% | 1,880 | 1.43 | Village |
| Williamsburg | 15 | 2,646 | 2,590 | 0.42% | 1,034 | 2.56 | Village |
| Newtown | 16 | 2,625 | 2,700 | -0.57% | 1,270 | 2.07 | Village |
| Day Heights | 17 | 2,198 | 2,484 | -1.26% | 1,866 | 1.18 | CDP |
| Batavia | 18 | 2,018 | 1,982 | 0.35% | 638 | 3.17 | Village |
| Coldstream | 19 | 1,584 | 1,383 | 1.73% | 569 | 2.79 | CDP |
| Goshen | 20 | 945 | 652 | 7.14% | 510 | 1.85 | CDP |
| Owensville | 21 | 818 | 798 | 0.49% | 1,324 | 0.62 | Village |
| Remington | 22 | 686 | 445 | 3.62% | 3,009 | 0.23 | CDP |
| Felicity | 23 | 662 | 646 | 0.46% | 2,508 | 0.26 | Village |
| Moscow | 24 | 159 | 154 | 0.63% | 433 | 0.37 | Village |
| Butlerville | 25 | 156 | 156 | 0% | 1,431 | 0.11 | Village |
| Marathon | 26 | 139 | 345 | 6.92% | 818 | 0.17 | CDP |
| Miamiville | 27 | 133 | 239 | -5% | 393 | 0.34 | CDP |
| Neville | 28 | 87 | 86 | 0% | 220 | 0.40 | Village |
| Chilo | 29 | 73 | 70 | 1.39% | 361 | 0.20 | Village |
Amelia is the largest city in Clermont County, with a population of 15,485.
Chilo is the smallest city in Clermont County.
There are 29 cities in Clermont County, Ohio.