Seneca zipcode
| City | Seneca |
| ZIP Code | 66538 |
| Type | Standard |
| State Code | KS |
| State | Kansas |
ZIP code of Seneca is 66538. This place is located in Kansas state in US. To send any postal service to Seneca, you must use 66538 zipcode.
The ZIP code 66538 is also used with 2 more city names of Kansas.
- Kelly, KS
- St Benedict, KS