Founded in 1855, Marshall County is one of 105 counties in the state of Kansas. Historically, Marshall County was one of the original 36 counties. The city of Marysville is the county seat. With FIPS code of 117, Marshall County has a population of 9,979 and area of 903 square miles (2,339 km2).
List of all cities in Marshall County, KS alphabetically
| City/Town | Postal Code | Area Code |
| Axtell, KS | 66403 | 785 |
| Beattie, KS | 66406 | 785 |
| Blue Rapids, KS | 66411 | 785 |
| Bremen, KS | 66412 | 785 |
| Frankfort, KS | 66427 | 785 |
| Herkimer, KS | 66508 | 785 |
| Home, KS | 66438 | 785 |
| Lillis, KS | 66427 | 785 |
| Marysville, KS | 66508 | 785 |
| Oketo, KS | 66518 | 785 |
| Summerfield, KS | 66541 | 785 |
| Vermillion, KS | 66544 | 785 |
| Vliets, KS | 66544 | 785 |
| Waterville, KS | 66548 | 785 |