Founded in 1873, Hamilton County is one of 105 counties in the state of Kansas. Historically, Hamilton County was formed from unorganized area. The city of Syracuse is the county seat. With FIPS code of 75, Hamilton County has a population of 2,484 and area of 996 square miles (2,580 km2).
List of all cities in Hamilton County, KS alphabetically
| City/Town | Postal Code | Area Code |
| Coolidge, KS | 67836 | 620 |
| Kendall, KS | 67857 | 620 |
| Syracuse, KS | 67878 | 620 |