5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wabash | 1 | 10,199 | 10,427 | -0.37% | 1,058 | 10 | City |
| North Manchester | 2 | 5,221 | 5,269 | -0.15% | 1,472 | 4 | Town |
| La Fontaine | 3 | 801 | 803 | 0% | 1,311 | 1 | Town |
| Roann | 4 | 435 | 437 | 0% | 1,883 | 0 | Town |
| Lagro | 5 | 348 | 348 | 0% | 587 | 1 | Town |
Wabash is the largest city in Wabash County, with a population of 10,199.
Lagro is the smallest city in Wabash County, with a population of 348.
There are 5 cities in Wabash County, Indiana.