35 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Hanover | 1 | 99,587 | 99,729 | 0.93% | 2,983 | 33 | Township |
| Warren | 2 | 66,195 | 65,768 | 0.4% | 1,841 | 36 | Township |
| Dunleith | 3 | 3,401 | 3,547 | -1.08% | 357 | 10 | Township |
| Galena | 4 | 3,151 | 3,319 | -0.88% | 682 | 5 | City |
| West Galena | 5 | 3,071 | 3,246 | -1.13% | 320 | 10 | Township |
| Stockton | 6 | 2,147 | 2,279 | -1.29% | 58 | 37 | Township |
| Stockton | 7 | 1,636 | 1,731 | -0.97% | 872 | 2 | Village |
| Guilford | 8 | 1,483 | 1,538 | -0.87% | 40 | 37 | Township |
| East Dubuque | 9 | 1,437 | 1,496 | -0.69% | 500 | 3 | City |
| Warren | 10 | 1,396 | 1,487 | -1.27% | 71 | 20 | Township |
| Warren | 11 | 1,250 | 1,328 | -1.03% | 1,210 | 1 | Village |
| East Galena | 12 | 1,201 | 1,255 | -0.99% | 51 | 23 | Township |
| Hanover | 13 | 1,123 | 1,188 | -1.14% | 22 | 52 | Township |
| Menominee | 14 | 1,002 | 1,043 | -0.89% | 36 | 28 | Township |
| Elizabeth | 15 | 952 | 996 | -1.04% | 26 | 37 | Township |
| Thompson | 16 | 811 | 841 | -0.86% | 22 | 36 | Township |
| Hanover | 17 | 811 | 862 | -0.98% | 723 | 1 | Village |
| Elizabeth | 18 | 678 | 707 | -0.73% | 735 | 1 | Village |
| Scales Mound | 19 | 623 | 659 | -1.27% | 34 | 19 | Township |
| Rawlins | 20 | 538 | 558 | -0.74% | 46 | 12 | Township |
| Woodbine | 21 | 512 | 534 | -0.97% | 14 | 37 | Township |
| Apple River | 22 | 433 | 449 | -0.69% | 23 | 19 | Township |
| Scales Mound | 23 | 411 | 434 | -0.96% | 654 | 1 | Village |
| Vinegar Hill | 24 | 395 | 406 | -0.5% | 29 | 14 | Township |
| Rush | 25 | 369 | 384 | -1.07% | 10 | 37 | Township |
| Rice | 26 | 336 | 351 | -1.18% | 14 | 24 | Township |
| Apple River | 27 | 329 | 341 | -0.6% | 467 | 1 | Village |
| Nora | 28 | 328 | 338 | -0.61% | 13 | 25 | Township |
| Derinda | 29 | 271 | 284 | -1.09% | 7 | 37 | Township |
| Wards Grove | 30 | 215 | 223 | -0.92% | 12 | 18 | Township |
| Menominee | 31 | 204 | 210 | -0.49% | 107 | 2 | Village |
| Pleasant Valley | 32 | 202 | 211 | -0.98% | 6 | 37 | Township |
| Berreman | 33 | 148 | 148 | 0.68% | 8 | 18 | Township |
| Council Hill | 34 | 129 | 133 | -0.77% | 8 | 16 | Township |
| Nora | 35 | 109 | 111 | 0% | 131 | 1 | Village |
Hanover is the largest city in Jo Daviess County, with a population of 99,587.
Nora is the smallest city in Jo Daviess County, with a population of 109.
There are 35 cities in Jo Daviess County, Illinois.