Chouteau County, Montana ZIP codes
7 ZIP codes are in Chouteau County, plus 6 that cross in from neighboring counties.
- ZIP codes
- 7
- Population in these ZIPs
- 5,005
- Avg. median income
- $64,700population-weighted
- Cities & towns
- 7
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ZIP codes in Chouteau County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 59420 | Carter | 164 | $88,438 | $117,100 |
| 59440 | Floweree | 432 | — | $228,200 |
| 59442 | Fort Benton | 1,838 | $67,917 | $286,100 |
| 59446 | Geraldine | 629 | $53,750 | $253,800 |
| 59450 | Highwood | 503 | $70,250 | $357,200 |
| 59460 | Loma | 178 | $51,551 | $113,000 |
| 59520 | Big Sandy | 1,261 | $62,109 | $259,900 |
ZIP codes partly in Chouteau County
These ZIP codes are mostly in a neighboring county but cover part of Chouteau County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 59404 | Great Falls | Cascade County | 28,822 | $83,867 | $389,700 |
| 59405 | Great Falls | Cascade County | 33,350 | $59,449 | $327,400 |
| 59416 | Brady | Pondera County | 425 | $89,167 | $323,800 |
| 59447 | Geyser | Judith Basin County | 297 | $77,750 | $346,600 |
| 59521 | Box Elder | Hill County | 3,529 | $50,288 | $103,700 |
| 59540 | Rudyard | Hill County | 430 | $74,250 | $173,400 |
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 Chouteau County
Nearby counties
Frequently asked questions
How many ZIP codes are in Chouteau County, Montana?
7 ZIP codes are mainly in Chouteau County, and 6 more ZIP codes from neighboring areas reach partly into it.
What cities are in Chouteau County?
ZIP codes in Chouteau County use the city names Big Sandy, Carter, Floweree, Fort Benton, Geraldine, Highwood and Loma.