Founded in 1854, Cass County is one of 93 counties in the state of Nebraska. Historically, Cass County was one of nine original counties. The city of Plattsmouth is the county seat. With FIPS code of 25, Cass County has a population of 27,017 and area of 559 square miles (1,448 km2).
List of all cities in Cass County, NE alphabetically
| City/Town | Postal Code | Area Code |
| Alvo, NE | 68304 | 402 |
| Avoca, NE | 68307 | 402 |
| Cedar Creek, NE | 68016 | 402 |
| Eagle, NE | 68347 | 402 |
| Elmwood, NE | 68349 | 402 |
| Greenwood, NE | 68366 | 402 |
| Louisville, NE | 68037 | 402 |
| Manley, NE | 68403 | 402 |
| Murdock, NE | 68407 | 402 |
| Murray, NE | 68409 | 402 |
| Nehawka, NE | 68413 | 402 |
| Plattsmouth, NE | 68048 | 402 |
| South Bend, NE | 68058 | 402 |
| Union, NE | 68455 | 402 |
| Wabash, NE | 68407 | 402 |
| Weeping Water, NE | 68463 | 402 |