6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Smith Center | 1 | 1,566 | 1,574 | -0.06% | 1,274 | 1 | City |
| Kensington | 2 | 394 | 399 | -0.25% | 1,176 | 0 | City |
| Lebanon | 3 | 180 | 182 | 0% | 559 | 0 | City |
| Gaylord | 4 | 83 | 85 | 0% | 325 | 0 | City |
| Athol | 5 | 41 | 41 | 0% | 222 | 0 | City |
| Cedar | 6 | 13 | 13 | 0% | 73 | 0 | City |
Smith Center is the largest city in Smith County, with a population of 1,566.
Cedar is the smallest city in Smith County, with a population of 13.
There are 6 cities in Smith County, Kansas.