Osage County, Missouri ZIP codes
8 ZIP codes are in Osage County, plus 8 that cross in from neighboring counties. It's part of the Jefferson City, MO metro area.
- ZIP codes
- 8
- Population in these ZIPs
- 10,926
- Avg. median income
- $71,300population-weighted
- Cities & towns
- 8
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Osage County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 65016 | Bonnots Mill | 1,240 | $78,750 | $269,400 |
| 65024 | Chamois | 1,218 | $68,438 | $231,900 |
| 65035 | Freeburg | 1,681 | $90,815 | $295,100 |
| 65048 | Koeltztown | 194 | $88,750 | $370,000 |
| 65051 | Linn | 4,487 | $53,289 | $254,500 |
| 65054 | Loose Creek | 893 | — | $200,700 |
| 65062 | Mount Sterling | 20 | — | — |
| 65085 | Westphalia | 1,193 | $103,563 | $290,600 |
ZIP codes partly in Osage County
These ZIP codes are mostly in a neighboring county but cover part of Osage County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 65001 | Argyle | Maries County | 159 | $80,938 | $205,400 |
| 65013 | Belle | Maries County | 3,137 | $57,212 | $219,000 |
| 65014 | Bland | Gasconade County | 2,245 | $61,938 | $239,500 |
| 65058 | Meta | Maries County | 1,274 | $71,771 | $268,000 |
| 65061 | Morrison | Gasconade County | 681 | $56,250 | $152,200 |
| 65076 | Saint Thomas | Cole County | 515 | $64,333 | $331,800 |
| 65101 | Jefferson City | Cole County | 28,793 | $74,807 | $270,800 |
| 65582 | Vienna | Maries County | 1,732 | $60,278 | $240,000 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Osage County
Nearby counties
Frequently asked questions
How many ZIP codes are in Osage County, Missouri?
8 ZIP codes are mainly in Osage County, and 8 more ZIP codes from neighboring areas reach partly into it.
What cities are in Osage County?
ZIP codes in Osage County use the city names Bonnots Mill, Chamois, Freeburg, Koeltztown, Linn, Loose Creek, Mount Sterling and Westphalia.
What metro area is Osage County in?
Osage County is part of the Jefferson City, MO metropolitan statistical area.