8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 66048 | Leavenworth | 35,717 |
| 66043 | Lansing | 11,056 |
| 66086 | Tonganoxie | 10,940 |
| 66012 | Bonner Springs | 10,425 |
| 66007 | Basehor | 10,150 |
| 66027 | Fort Leavenworth | 7,365 |
| 66052 | Linwood | 2,090 |
| 66020 | Easton | 1,809 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Leavenworth County, Kansas (US Census).