51 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Union township | 1 | 51,096 | 49,687 | 0.61% | 1,763 | 28.98 | Township |
| Miami township | 2 | 45,248 | 43,965 | 0.62% | 1,381 | 32.77 | Township |
| Batavia township | 3 | 28,530 | 27,685 | 0.65% | 718 | 39.73 | Township |
| Bethel township | 4 | 17,789 | 18,048 | -0.2% | 482 | 36.92 | Township |
| Goshen township | 5 | 16,639 | 16,094 | 0.73% | 489 | 34.06 | Township |
| Pierce township | 6 | 15,542 | 15,093 | 0.63% | 680 | 22.84 | Township |
| Amelia | 7 | 15,485 | 10,308 | 7.14% | 2,798 | 5.54 | CDP |
| Loveland | 8 | 13,058 | 13,302 | -0.37% | 2,463 | 5.30 | City |
| Montgomery | 9 | 10,766 | 10,853 | -0.16% | 2,029 | 5.31 | City |
| Tate township | 10 | 9,418 | 9,166 | 0.6% | 202 | 46.62 | Township |
| Withamsville | 11 | 7,999 | 7,754 | 0.83% | 2,557 | 3.13 | CDP |
| Dry Run | 12 | 7,451 | 8,200 | 0.15% | 1,566 | 4.76 | CDP |
| Milford | 13 | 6,361 | 6,570 | -0.66% | 1,714 | 3.71 | City |
| The Village Indian Hill | 14 | 5,974 | 6,084 | -0.37% | 306 | 19.51 | City |
| Williamsburg township | 15 | 5,832 | 5,682 | 0.57% | 194 | 30.11 | Township |
| Stonelick township | 16 | 5,820 | 5,665 | 0.59% | 197 | 29.48 | Township |
| Ohio township | 17 | 5,720 | 5,533 | 0.72% | 426 | 13.43 | Township |
| Goshen township | 18 | 4,976 | 5,098 | -0.28% | 188 | 26.51 | Township |
| Mount Carmel | 19 | 4,970 | 4,813 | 0.32% | 2,716 | 1.83 | CDP |
| Bethel township | 20 | 4,934 | 4,773 | 0.69% | 147 | 33.46 | Township |
| Summerside | 21 | 4,373 | 4,352 | -1.06% | 2,119 | 2.06 | CDP |
| Mulberry | 22 | 4,258 | 4,210 | 1.48% | 2,656 | 1.60 | CDP |
| Cherry Grove | 23 | 4,118 | 4,237 | -0.41% | 3,638 | 1.13 | CDP |
| Goshen township | 24 | 3,658 | 3,635 | 0.25% | 97 | 37.60 | Township |
| Milford township | 25 | 3,591 | 3,524 | 0.53% | 98 | 36.60 | Township |
| Mount Repose | 26 | 3,522 | 3,661 | -2.14% | 1,716 | 2.05 | CDP |
| Goshen township | 27 | 3,080 | 3,089 | 0.06% | 95 | 32.52 | Township |
| Goshen township | 28 | 2,881 | 2,999 | -0.93% | 80 | 36.08 | Township |
| New Richmond | 29 | 2,796 | 2,728 | 0.5% | 792 | 3.53 | Village |
| Bethel | 30 | 2,683 | 2,623 | 0.45% | 1,880 | 1.43 | Village |
| Williamsburg | 31 | 2,646 | 2,590 | 0.42% | 1,034 | 2.56 | Village |
| Newtown | 32 | 2,625 | 2,700 | -0.57% | 1,270 | 2.07 | Village |
| Washington township | 33 | 2,238 | 2,172 | 0.67% | 63 | 35.63 | Township |
| Day Heights | 34 | 2,198 | 2,484 | -1.26% | 1,866 | 1.18 | CDP |
| Batavia | 35 | 2,018 | 1,982 | 0.35% | 638 | 3.17 | Village |
| Milford township | 36 | 1,981 | 1,909 | 0.66% | 77 | 25.63 | Township |
| Coldstream | 37 | 1,584 | 1,383 | 1.73% | 569 | 2.79 | CDP |
| Milford township | 38 | 1,121 | 1,099 | 0.63% | 32 | 35.38 | Township |
| Goshen | 39 | 945 | 652 | 7.14% | 510 | 1.85 | CDP |
| Goshen township | 40 | 945 | 489 | 10.92% | 53 | 17.86 | Township |
| Owensville | 41 | 818 | 798 | 0.49% | 1,324 | 0.62 | Village |
| Remington | 42 | 686 | 445 | 3.63% | 3,009 | 0.23 | CDP |
| Felicity | 43 | 662 | 646 | 0.46% | 2,508 | 0.26 | Village |
| Goshen township | 44 | 564 | 557 | -0.35% | 20 | 28.38 | Township |
| Bethel township | 45 | 279 | 283 | -0.36% | 12 | 23.53 | Township |
| Moscow | 46 | 159 | 154 | 0.63% | 433 | 0.37 | Village |
| Butlerville | 47 | 156 | 156 | 0% | 1,431 | 0.11 | Village |
| Marathon | 48 | 139 | 345 | 6.92% | 818 | 0.17 | CDP |
| Miamiville | 49 | 133 | 239 | -5% | 393 | 0.34 | CDP |
| Neville | 50 | 87 | 86 | 0% | 220 | 0.40 | Village |
| Chilo | 51 | 73 | 70 | 1.39% | 361 | 0.20 | Village |
Union township is the largest city in Clermont County, with a population of 51,096.
Chilo is the smallest city in Clermont County.
There are 51 cities in Clermont County, Ohio.