29 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Norwalk | 1 | 17,206 | 17,035 | 0.2% | 1,941 | 9 | City |
| Bellevue | 2 | 8,149 | 8,233 | -0.21% | 1,330 | 6 | City |
| Willard | 3 | 6,082 | 6,199 | -0.39% | 1,699 | 4 | City |
| Norwalk | 4 | 3,403 | 3,470 | -0.38% | 193 | 18 | Township |
| New London | 5 | 3,170 | 3,237 | -0.35% | 123 | 26 | Township |
| Wakeman | 6 | 2,790 | 2,778 | 0% | 108 | 26 | Township |
| New Haven | 7 | 2,383 | 2,429 | -0.42% | 103 | 23 | Township |
| New London | 8 | 2,363 | 2,416 | -0.46% | 1,072 | 2 | Village |
| Ridgefield | 9 | 2,171 | 2,183 | 0.09% | 85 | 25 | Township |
| Bronson | 10 | 1,972 | 1,962 | 0.2% | 75 | 26 | Township |
| Plymouth | 11 | 1,957 | 1,970 | -0.15% | 76 | 26 | Township |
| Plymouth | 12 | 1,884 | 1,905 | -0.05% | 84 | 22 | Township |
| Plymouth | 13 | 1,685 | 1,713 | -0.35% | 675 | 2 | Village |
| Clarksfield | 14 | 1,583 | 1,561 | 0.32% | 59 | 27 | Township |
| Townsend | 15 | 1,533 | 1,557 | -0.45% | 60 | 26 | Township |
| Greenwich | 16 | 1,378 | 1,400 | -0.36% | 908 | 2 | Village |
| Monroeville | 17 | 1,282 | 1,299 | -0.31% | 916 | 1 | Village |
| Peru | 18 | 1,034 | 1,063 | -0.58% | 40 | 26 | Township |
| Hartland | 19 | 1,026 | 1,049 | -0.29% | 39 | 26 | Township |
| Wakeman | 20 | 1,016 | 990 | 0.49% | 1,232 | 1 | Village |
| Greenwich | 21 | 1,011 | 1,022 | -0.39% | 41 | 25 | Township |
| Fitchville | 22 | 1,002 | 1,022 | -0.3% | 39 | 26 | Township |
| Lyme | 23 | 852 | 866 | -0.23% | 37 | 23 | Township |
| Holiday Lakes | 24 | 688 | 647 | -0.58% | 397 | 2 | CDP |
| New Haven | 25 | 550 | 332 | 1.85% | 445 | 1 | CDP |
| Sherman | 26 | 475 | 483 | -0.84% | 18 | 26 | Township |
| North Fairfield | 27 | 453 | 463 | -0.44% | 981 | 0 | Village |
| Collins | 28 | 395 | 443 | -3.66% | 86 | 5 | CDP |
| Celeryville | 29 | 80 | 84 | -10.11% | 155 | 1 | CDP |
Norwalk is the largest city in Huron County, with a population of 17,206.
Celeryville is the smallest city in Huron County, with a population of 80.
There are 29 cities in Huron County, Ohio.