5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mount Carmel | 1 | 6,597 | 6,981 | -1.15% | 1,372 | 4.81 | City |
| Lancaster township | 2 | 1,314 | 1,387 | -1.13% | 41 | 32.03 | Township |
| Allendale | 3 | 432 | 457 | -1.14% | 1,407 | 0.31 | Village |
| Bellmont | 4 | 236 | 248 | -0.84% | 726 | 0.33 | Village |
| Keensburg | 5 | 165 | 175 | -1.2% | 635 | 0.26 | Village |
Mount Carmel is the largest city in Wabash County, with a population of 6,597.
Keensburg is the smallest city in Wabash County.
There are 5 cities in Wabash County, Illinois.