66023 Zip Code
| City: | Effingham |
| State: | KS |
| County: | Atchison County |
| Area Codes: | 913, 785 |
| Latitude: | 39.52 |
| Longitude: | -95.39 |
| Time Zone: | America/Chicago |
| Population in 2010: | 1,124 |
| School District: | Atchison County Community Schools Unified School District 377 |
| District Code: | 5700 |