11 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 68822 | Broken Bow | 4,335 |
| 69120 | Arnold | 1,208 |
| 68825 | Callaway | 995 |
| 68814 | Ansley | 984 |
| 68874 | Sargent | 821 |
| 68856 | Merna | 715 |
| 68813 | Anselmo | 518 |
| 68855 | Mason City | 400 |
| 68860 | Oconto | 301 |
| 68828 | Comstock | 204 |
| 68881 | Westerville | 26 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 11 ZCTAs in Custer County, Nebraska (US Census).