| Zip Code | City | Population ↓ |
|---|---|---|
| 68450 | Tecumseh | 3,173 |
| 68443 | Sterling | 1,086 |
| 68329 | Cook | 681 |
| 68348 | Elk Creek | 263 |
| 68332 | Crab Orchard | 83 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 5 ZCTAs in Johnson County, Nebraska (US Census).