| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wabash | 1 | 10,140 | 10,424 | -0.49% | 1,051 | 10 | City |
| North Manchester | 2 | 5,218 | 5,272 | -0.23% | 1,472 | 4 | Town |
| La Fontaine | 3 | 820 | 807 | 0.12% | 1,342 | 1 | Town |
| Roann | 4 | 436 | 437 | -0.23% | 1,887 | 0 | Town |
| Lagro | 5 | 350 | 347 | 0% | 590 | 1 | Town |
Wabash is the largest city in Wabash County, with a population of 10,140.
Lagro is the smallest city in Wabash County, with a population of 350.
There are 5 cities in Wabash County, Indiana.