19 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wade | 1 | 4,274 | 4,378 | -0.7% | 58 | 74 | Township |
| Newton | 2 | 2,710 | 2,770 | -0.44% | 1,298 | 2 | City |
| North Muddy | 3 | 753 | 767 | -0.66% | 15 | 51 | Township |
| Crooked Creek | 4 | 654 | 672 | -0.76% | 12 | 56 | Township |
| Grove | 5 | 580 | 594 | -0.51% | 12 | 49 | Township |
| Ste. Marie | 6 | 507 | 520 | -0.59% | 12 | 43 | Township |
| Willow Hill | 7 | 503 | 517 | -0.98% | 15 | 34 | Township |
| Smallwood | 8 | 427 | 438 | -0.47% | 10 | 42 | Township |
| Fox | 9 | 425 | 437 | -0.7% | 11 | 40 | Township |
| Newton | 10 | 424 | 427 | 0.24% | 12 | 36 | Township |
| Grandville | 11 | 348 | 356 | -0.57% | 9 | 37 | Township |
| South Muddy | 12 | 307 | 319 | -1.6% | 9 | 36 | Township |
| Hunt City | 13 | 250 | 257 | -0.4% | 8 | 32 | Township |
| Ste. Marie | 14 | 226 | 233 | -0.88% | 204 | 1 | Village |
| Willow Hill | 15 | 167 | 170 | -0.6% | 161 | 1 | Village |
| Hidalgo | 16 | 107 | 109 | -0.93% | 311 | 0 | Village |
| Wheeler | 17 | 97 | 96 | 0% | 168 | 1 | Village |
| West Liberty | 18 | 86 | 192 | 7.5% | 168 | 1 | CDP |
| Yale | 19 | 65 | 67 | -1.52% | 113 | 1 | Village |
Wade is the largest city in Jasper County, with a population of 4,274.
Yale is the smallest city in Jasper County, with a population of 65.
There are 19 cities in Jasper County, Illinois.