There are 30 cities in Iroquois County, Illinois.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Kankakee | 1 | Illinois | 23,335 | 24,005 | -0.71% | 1,541 | 15.14 |
| Hoopeston | 2 | Illinois | 4,674 | 4,900 | -1.21% | 1,268 | 3.69 |
| Watseka | 3 | Illinois | 4,456 | 4,670 | -1.2% | 1,514 | 2.94 |
| Gilman | 4 | Illinois | 1,657 | 1,740 | -1.25% | 681 | 2.43 |
| Herscher | 5 | Illinois | 1,478 | 1,517 | -0.67% | 815 | 1.81 |
| Clifton | 6 | Illinois | 1,288 | 1,352 | -1.23% | 1,385 | 0.93 |
| Onarga | 7 | Illinois | 1,268 | 1,327 | -1.17% | 757 | 1.67 |
| Rossville | 8 | Illinois | 1,161 | 1,220 | -1.28% | 830 | 1.40 |
| St. Anne | 9 | Illinois | 1,120 | 1,156 | -0.8% | 1,349 | 0.83 |
| Milford | 10 | Illinois | 1,099 | 1,159 | -1.35% | 1,638 | 0.67 |
| Chebanse | 11 | Illinois | 1,002 | 1,046 | -1.09% | 842 | 1.19 |
| Sheldon | 12 | Illinois | 920 | 967 | -1.29% | 1,222 | 0.75 |
| Cissna Park | 13 | Illinois | 772 | 812 | -1.28% | 1,065 | 0.72 |
| Ashkum | 14 | Illinois | 712 | 747 | -1.25% | 853 | 0.83 |
| Aroma Park | 15 | Illinois | 639 | 661 | -0.93% | 340 | 1.88 |
| Danforth | 16 | Illinois | 568 | 594 | -1.22% | 1,188 | 0.48 |
| Crescent City | 17 | Illinois | 524 | 554 | -1.5% | 1,149 | 0.46 |
| Rankin | 18 | Illinois | 471 | 494 | -1.26% | 813 | 0.58 |
| Buckley | 19 | Illinois | 465 | 491 | -1.48% | 1,472 | 0.32 |
| Sun River Terrace | 20 | Illinois | 443 | 458 | -0.9% | 762 | 0.58 |
| Loda | 21 | Illinois | 340 | 356 | -1.16% | 232 | 1.47 |
| Martinton | 22 | Illinois | 317 | 335 | -1.55% | 1,157 | 0.27 |
| Beaverville | 23 | Illinois | 289 | 305 | -1.36% | 1,051 | 0.28 |
| Woodland | 24 | Illinois | 236 | 247 | -1.26% | 482 | 0.49 |
| Donovan | 25 | Illinois | 234 | 248 | -1.68% | 713 | 0.33 |
| Sammons Point | 26 | Illinois | 208 | 212 | -0.48% | 112 | 1.85 |
| Thawville | 27 | Illinois | 204 | 214 | -1.45% | 664 | 0.31 |
| Wellington | 28 | Illinois | 193 | 204 | -1.53% | 811 | 0.24 |
| Papineau | 29 | Illinois | 129 | 135 | -1.53% | 620 | 0.21 |
| Iroquois | 30 | Illinois | 128 | 132 | -0.78% | 226 | 0.57 |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Kankakee is the largest city in Iroquois County.
Iroquois is the smallest city in Iroquois County.
There are 30 cities in Iroquois County, Illinois.