28 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Findlay | 1 | 40,038 | 40,290 | -0.12% | 2,038 | 19.64 | City |
| Liberty township | 2 | 7,116 | 7,112 | 0.13% | 243 | 29.32 | Township |
| Washington township | 3 | 4,183 | 4,328 | -0.69% | 118 | 35.39 | Township |
| Allen township | 4 | 3,010 | 2,807 | 1.48% | 130 | 23.21 | Township |
| Van Buren township | 5 | 2,760 | 2,824 | -0.58% | 76 | 36.25 | Township |
| Pleasant township | 6 | 2,275 | 2,366 | -0.83% | 62 | 36.48 | Township |
| Van Buren township | 7 | 2,084 | 2,097 | 0.1% | 56 | 36.90 | Township |
| Union township | 8 | 1,794 | 1,868 | -0.77% | 50 | 35.61 | Township |
| Van Buren township | 9 | 1,516 | 1,541 | -0.26% | 60 | 25.36 | Township |
| McComb | 10 | 1,510 | 1,565 | -0.72% | 1,445 | 1.04 | Village |
| Arlington | 11 | 1,429 | 1,488 | -0.83% | 1,820 | 0.79 | Village |
| Orange township | 12 | 1,270 | 1,305 | -0.55% | 35 | 36.21 | Township |
| Cass township | 13 | 1,204 | 1,019 | 3.17% | 50 | 24.02 | Township |
| Biglick township | 14 | 1,119 | 1,164 | -0.8% | 31 | 36.08 | Township |
| Blanchard township | 15 | 1,088 | 1,121 | -0.64% | 30 | 36.24 | Township |
| Eagle township | 16 | 1,060 | 1,073 | -0.19% | 30 | 35.80 | Township |
| Van Buren township | 17 | 975 | 1,009 | -0.61% | 40 | 24.38 | Township |
| Van Buren | 18 | 681 | 403 | 8.96% | 2,640 | 0.26 | Village |
| Arcadia | 19 | 548 | 565 | -0.54% | 966 | 0.57 | Village |
| Rawson | 20 | 548 | 570 | -0.72% | 1,435 | 0.38 | Village |
| Mount Blanchard | 21 | 455 | 472 | -0.66% | 892 | 0.51 | Village |
| Vanlue | 22 | 334 | 346 | -0.6% | 960 | 0.35 | Village |
| Benton Ridge | 23 | 257 | 271 | -1.15% | 685 | 0.38 | Village |
| Jenera | 24 | 243 | 257 | -1.22% | 907 | 0.27 | Village |
| West Leipsic | 25 | 217 | 221 | -0.46% | 871 | 0.25 | Village |
| Mount Cory | 26 | 214 | 226 | -0.93% | 554 | 0.39 | Village |
| Patterson | 27 | 123 | 127 | -0.81% | 1,398 | 0.09 | Village |
| Bairdstown | 28 | 118 | 117 | 0% | 437 | 0.27 | Village |
Findlay is the largest city in Hancock County, with a population of 40,038.
Bairdstown is the smallest city in Hancock County.
There are 28 cities in Hancock County, Ohio.