7 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sharon Springs township | 1 | 949 | 938 | 0.74% | 3 | 341.51 | Township |
| Sharon Springs | 2 | 750 | 752 | 0% | 831 | 0.90 | City |
| Weskan township | 3 | 348 | 336 | 1.75% | 1 | 302.50 | Township |
| Wallace township | 4 | 169 | 165 | 1.2% | 1 | 188.49 | Township |
| Weskan | 5 | 113 | 103 | -3.42% | 43 | 2.64 | CDP |
| Harrison township | 6 | 75 | 73 | 1.35% | 1 | 81.16 | Township |
| Wallace | 7 | 45 | 45 | 0% | 112 | 0.40 | City |
Sharon Springs township is the largest city in Wallace County, with a population of 949.
Wallace is the smallest city in Wallace County.
There are 7 cities in Wallace County, Kansas.