9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Napoleon | 1 | 8,678 | 8,858 | -0.41% | 1,397 | 6.21 | City |
| Deshler | 2 | 1,551 | 1,590 | -0.51% | 678 | 2.29 | Village |
| Liberty Center | 3 | 1,087 | 1,111 | -0.46% | 1,052 | 1.03 | Village |
| Holgate | 4 | 1,033 | 1,058 | -0.48% | 895 | 1.15 | Village |
| McClure | 5 | 692 | 697 | -0.14% | 1,390 | 0.50 | Village |
| Hamler | 6 | 604 | 603 | 0% | 731 | 0.83 | Village |
| Ridgeville Corners | 7 | 316 | 296 | -2.47% | 346 | 0.91 | CDP |
| Malinta | 8 | 224 | 233 | -0.89% | 291 | 0.77 | Village |
| New Bavaria | 9 | 85 | 87 | 0% | 1,214 | 0.07 | Village |
Napoleon is the largest city in Henry County, with a population of 8,678.
New Bavaria is the smallest city in Henry County.
There are 9 cities in Henry County, Ohio.