US location post office
ZIP Code 73855
- Zip Code: 73855
- Type: Standard
- Official USPS city name: Rosston
- Official USPS State Code: OK
- Official State Name: Oklahoma
- ZCTA: TRUE
- Population: 87.0
- Density: 0.2
- Primary Official County Code: 40059
- Primary Official County Name: Harper
- Official County Name: Harper
- Official County Code: 40059
- Imprecise: FALSE
- Military: FALSE
- Timezone: America/Chicago (23:10 PM Monday, July 13 2026-07-13 (GMT -0500))
- Geo Point: 36.91681, -99.86541
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