18 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wade | 1 | 4,244 | 4,378 | -0.7% | 57 | 74 | Township |
| Newton | 2 | 2,698 | 2,770 | -0.44% | 1,292 | 2 | City |
| North Muddy | 3 | 748 | 767 | -0.66% | 15 | 51 | Township |
| Crooked Creek | 4 | 649 | 672 | -0.76% | 12 | 56 | Township |
| Grove | 5 | 577 | 594 | -0.52% | 12 | 49 | Township |
| Ste. Marie | 6 | 504 | 520 | -0.59% | 12 | 43 | Township |
| Willow Hill | 7 | 498 | 517 | -0.99% | 15 | 34 | Township |
| Smallwood | 8 | 425 | 438 | -0.47% | 10 | 42 | Township |
| Newton | 9 | 425 | 427 | 0.24% | 12 | 36 | Township |
| Fox | 10 | 422 | 437 | -0.71% | 10 | 40 | Township |
| Grandville | 11 | 346 | 356 | -0.57% | 9 | 37 | Township |
| South Muddy | 12 | 302 | 319 | -1.63% | 8 | 36 | Township |
| Hunt City | 13 | 249 | 257 | -0.4% | 8 | 32 | Township |
| Ste. Marie | 14 | 225 | 233 | -0.44% | 203 | 1 | Village |
| Willow Hill | 15 | 167 | 170 | 0% | 161 | 1 | Village |
| Hidalgo | 16 | 107 | 109 | 0% | 311 | 0 | Village |
| Wheeler | 17 | 97 | 96 | 0% | 168 | 1 | Village |
| Yale | 18 | 65 | 67 | 0% | 113 | 1 | Village |
Wade is the largest city in Jasper County, with a population of 4,244.
Yale is the smallest city in Jasper County, with a population of 65.
There are 18 cities in Jasper County, Illinois.