Founded in 1833, Cass County is one of 114 counties in the state of Missouri. Historically, Cass County was formed from Jackson County. The city of Harrisonville is the county seat. With FIPS code of 37, Cass County has a population of 109,638 and area of 699 square miles (1,810 km2).
List of all cities in Cass County, MO alphabetically
| City/Town | Postal Code | Area Code |
| Archie, MO | 64725 | 816/975 |
| Austin, MO | 64725 | 816/975 |
| Belton, MO | 64012 | 816/975 |
| Cleveland, MO | 64734 | 816/975 |
| East Lynne, MO | 64743 | 816/975 |
| Freeman, MO | 64746 | 816/975 |
| Garden City, MO | 64747 | 816/975 |
| Gunn City, MO | 64747 | 816/975 |
| Harrisonville, MO | 64701 | 816/975 |
| Lake Annette, MO | 64746 | 816/975 |
| Latour, MO | 64747 | 816/975 |
| Lees Summit, MO | 64083 | 816/975 |
| Peculiar, MO | 64078 | 816/975 |
| Pleasant Hill, MO | 64080 | 816/975 |
| Raymore, MO | 64083 | 816/975 |
| Strasburg, MO | 64090 | 816/975 |
| Village of Loch Lloyd, MO | 64012 | 816/975 |
| West Line, MO | 64734 | 816/975 |