8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 65051 | Linn | 4,842 |
| 65035 | Freeburg | 1,716 |
| 65016 | Bonnots Mill | 1,391 |
| 65085 | Westphalia | 1,225 |
| 65054 | Loose Creek | 1,187 |
| 65024 | Chamois | 975 |
| 65048 | Koeltztown | 182 |
| 65062 | Mount Sterling | 26 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Osage County, Missouri (US Census).