16 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Napoleon | 1 | 9,590 | 9,800 | -0.34% | 277 | 35 | Township |
| Napoleon | 2 | 8,655 | 8,861 | -0.39% | 1,393 | 6 | City |
| Liberty | 3 | 2,461 | 2,473 | -0.08% | 77 | 32 | Township |
| Bartlow | 4 | 2,152 | 2,191 | -0.14% | 59 | 36 | Township |
| Washington | 5 | 2,118 | 1,971 | 1.34% | 73 | 29 | Township |
| Pleasant | 6 | 1,928 | 1,917 | 0.26% | 54 | 36 | Township |
| Deshler | 7 | 1,559 | 1,591 | -0.32% | 681 | 2 | Village |
| Flatrock | 8 | 1,216 | 1,228 | 0.16% | 35 | 35 | Township |
| Ridgeville | 9 | 1,102 | 1,101 | 0% | 47 | 24 | Township |
| Liberty Center | 10 | 1,081 | 1,108 | -0.37% | 1,046 | 1 | Village |
| Holgate | 11 | 1,038 | 1,062 | -0.38% | 899 | 1 | Village |
| Freedom | 12 | 912 | 931 | -0.44% | 39 | 24 | Township |
| McClure | 13 | 687 | 696 | -0.15% | 1,380 | 0 | Village |
| Hamler | 14 | 598 | 603 | -0.17% | 724 | 1 | Village |
| Malinta | 15 | 225 | 233 | -0.44% | 292 | 1 | Village |
| New Bavaria | 16 | 85 | 87 | 0% | 1,214 | 0 | Village |
Napoleon is the largest city in Henry County, with a population of 9,590.
New Bavaria is the smallest city in Henry County, with a population of 85.
There are 16 cities in Henry County, Ohio.