| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Attica | 1 | 3,341 | 3,051 | 1.55% | 1,852 | 2 | City |
| Covington | 2 | 2,791 | 2,691 | 0.61% | 1,931 | 1 | City |
| Veedersburg | 3 | 2,117 | 2,097 | 0% | 707 | 3 | Town |
| Kingman | 4 | 565 | 554 | 0.18% | 856 | 1 | Town |
| Hillsboro | 5 | 512 | 510 | -0.19% | 1,636 | 0 | Town |
| Newtown | 6 | 228 | 223 | 0% | 452 | 1 | Town |
| Mellott | 7 | 175 | 173 | 0% | 512 | 0 | Town |
| Wallace | 8 | 82 | 81 | 0% | 573 | 0 | Town |
Attica is the largest city in Fountain County, with a population of 3,341.
Wallace is the smallest city in Fountain County, with a population of 82.
There are 8 cities in Fountain County, Indiana.