Founded in 1887, Kearny County is one of 105 counties in the state of Kansas. Historically, Kearny County was formed from Finney and Hamilton Counties. The city of Lakin is the county seat. With FIPS code of 93, Kearny County has a population of 3,891 and area of 870 square miles (2,253 km2).
List of all cities in Kearny County, KS alphabetically
| City/Town | Postal Code | Area Code |
| Deerfield, KS | 67838 | 620 |
| Lakin, KS | 67860 | 620 |