US location post office
ZIP Code 59638
- Zip Code: 59638
- Type: POBox
- Official USPS city name: Jefferson City
- Official USPS State Code: MT
- Official State Name: Montana
- ZCTA: TRUE
- Population: 703.0
- Density: 2.8
- Primary Official County Code: 30043
- Primary Official County Name: Jefferson
- Official County Name: Jefferson
- Official County Code: 30043
- Imprecise: FALSE
- Military: FALSE
- Timezone: America/Denver (08:48 AM Friday, March 14 2025-03-14 (GMT -0600))
- Geo Point: 46.36037, -111.96815
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