US location post office
ZIP Code 59859
- Zip Code: 59859
- Type: Standard
- Official USPS city name: Plains
- Official USPS State Code: MT
- Official State Name: Montana
- ZCTA: TRUE
- Population: 3300.0
- Density: 1.8
- Primary Official County Code: 30089
- Primary Official County Name: Sanders
- Official County Name: Sanders
- Official County Code: 30089
- Imprecise: FALSE
- Military: FALSE
- Timezone: America/Denver (05:09 AM Monday, June 23 2025-06-23 (GMT -0600))
- Geo Point: 47.53049, -114.82135
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