7 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Linn Valley | 1 | 1,186 | 963 | 3.22% | 373 | 3 | City |
| Pleasanton | 2 | 1,170 | 1,214 | -0.59% | 540 | 2 | City |
| La Cygne | 3 | 1,008 | 1,041 | -0.49% | 660 | 2 | City |
| Mound City | 4 | 635 | 650 | -0.31% | 549 | 1 | City |
| Parker | 5 | 225 | 236 | -0.88% | 801 | 0 | City |
| Blue Mound | 6 | 219 | 221 | 0% | 344 | 1 | City |
| Prescott | 7 | 217 | 205 | 0.93% | 761 | 0 | City |
Linn Valley is the largest city in Linn County, with a population of 1,186.
Prescott is the smallest city in Linn County, with a population of 217.
There are 7 cities in Linn County, Kansas.