12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mount Ayr | 1 | 1,630 | 1,619 | 0.12% | 604 | 2.70 | City |
| Diagonal | 2 | 338 | 338 | 0% | 370 | 0.91 | City |
| Kellerton | 3 | 239 | 239 | 0% | 370 | 0.65 | City |
| Tingley | 4 | 135 | 135 | 0% | 197 | 0.69 | City |
| Sun Valley Lake | 5 | 124 | 188 | -1.59% | 60 | 2.05 | CDP |
| Redding | 6 | 64 | 63 | 0% | 65 | 0.99 | City |
| Benton | 7 | 40 | 40 | 0% | 53 | 0.76 | City |
| Delphos | 8 | 39 | 44 | 8.33% | 175 | 0.22 | CDP |
| Maloy | 9 | 26 | 26 | 0% | 42 | 0.62 | City |
| Ellston | 10 | 21 | 21 | 0% | 84 | 0.25 | City |
| Beaconsfield | 11 | 15 | 15 | 0% | 21 | 0.73 | City |
| Athelstan | 12 | 4 | 4 | 0% | 31 | 0.13 | CDP |
Mount Ayr is the largest city in Ringgold County, with a population of 1,630.
Athelstan is the smallest city in Ringgold County.
There are 12 cities in Ringgold County, Iowa.