| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Linn Valley | 1 | 1,201 | 960 | 3.36% | 378 | 3 | City |
| Pleasanton | 2 | 1,180 | 1,213 | -0.51% | 544 | 2 | City |
| La Cygne | 3 | 1,007 | 1,043 | -0.59% | 659 | 2 | City |
| Mound City | 4 | 636 | 651 | -0.47% | 550 | 1 | City |
| Parker | 5 | 230 | 240 | -0.86% | 819 | 0 | City |
| Blue Mound | 6 | 219 | 222 | -0.45% | 344 | 1 | City |
| Prescott | 7 | 217 | 208 | 0.46% | 761 | 0 | City |
Linn Valley is the largest city in Linn County, with a population of 1,201.
Prescott is the smallest city in Linn County, with a population of 217.
There are 7 cities in Linn County, Kansas.