Founded in 1855, Linn County is one of 105 counties in the state of Kansas. Historically, Linn County was one of the original 36 counties. The city of Mound City is the county seat. With FIPS code of 107, Linn County has a population of 9,747 and area of 599 square miles (1,551 km2).
List of all cities in Linn County, KS alphabetically
| City/Town | Postal Code | Area Code |
| Blue Mound, KS | 66010 | 913 |
| Lacygne, KS | 66040 | 913 |
| Linn Valley, KS | 66040 | 913 |
| Mantey, KS | 66767 | 913 |
| Mound City, KS | 66056 | 913 |
| Parker, KS | 66072 | 913 |
| Pleasanton, KS | 66075 | 913 |
| Prescott, KS | 66767 | 913 |