30 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fairfield | 1 | 4,652 | 4,866 | -0.92% | 1,135 | 4.10 | City |
| Grover township | 2 | 3,432 | 3,572 | -0.67% | 175 | 19.64 | Township |
| Jasper township | 3 | 1,688 | 1,742 | -0.47% | 51 | 33.18 | Township |
| Big Mound township | 4 | 1,685 | 1,746 | -0.59% | 33 | 51.74 | Township |
| Orel township | 5 | 1,313 | 1,354 | -0.45% | 28 | 47.17 | Township |
| Lamard township | 6 | 1,305 | 1,338 | -0.38% | 38 | 34.42 | Township |
| Bedford township | 7 | 976 | 1,001 | -0.31% | 28 | 34.37 | Township |
| Wayne City | 8 | 963 | 1,003 | -0.82% | 557 | 1.73 | Village |
| Indian Prairie township | 9 | 656 | 683 | -0.61% | 18 | 37.33 | Township |
| Barnhill township | 10 | 618 | 628 | -0.16% | 18 | 33.70 | Township |
| Cisne | 11 | 610 | 627 | -0.49% | 968 | 0.63 | Village |
| Orchard township | 12 | 604 | 630 | -0.66% | 16 | 36.87 | Township |
| Four Mile township | 13 | 544 | 560 | -0.37% | 14 | 40.08 | Township |
| Leech township | 14 | 426 | 452 | -1.39% | 8 | 53.38 | Township |
| Keith township | 15 | 375 | 382 | 0% | 10 | 36.02 | Township |
| Hickory Hill township | 16 | 366 | 377 | -0.54% | 9 | 42.60 | Township |
| Fairfield township | 17 | 361 | 369 | -0.28% | 10 | 36.40 | Township |
| Jeffersonville | 18 | 338 | 352 | -0.88% | 334 | 1.01 | Village |
| Berry township | 19 | 333 | 345 | -0.6% | 9 | 37.51 | Township |
| Mount Erie township | 20 | 324 | 334 | -0.61% | 6 | 53.35 | Township |
| Arrington township | 21 | 303 | 312 | -0.33% | 18 | 16.98 | Township |
| Elm River township | 22 | 236 | 243 | -0.42% | 7 | 36.03 | Township |
| Sims | 23 | 163 | 168 | -0.61% | 138 | 1.18 | Village |
| Garden Hill township | 24 | 159 | 164 | -0.63% | 9 | 18.55 | Township |
| Massilon township | 25 | 136 | 142 | -0.73% | 4 | 33.45 | Township |
| Zif township | 26 | 118 | 121 | 0% | 7 | 17.48 | Township |
| Mount Erie | 27 | 95 | 97 | 0% | 247 | 0.38 | Village |
| Johnsonville | 28 | 68 | 72 | -1.45% | 319 | 0.21 | Village |
| Golden Gate | 29 | 58 | 62 | -1.69% | 734 | 0.08 | Village |
| Keenes | 30 | 48 | 48 | 0% | 369 | 0.13 | Village |
Fairfield is the largest city in Wayne County, with a population of 4,652.
Keenes is the smallest city in Wayne County.
There are 30 cities in Wayne County, Illinois.