US location post office
ZIP Code 78609
- Zip Code: 78609
- Type: Standard
- Official USPS city name: Buchanan Dam
- Official USPS State Code: TX
- Official State Name: Texas
- ZCTA: TRUE
- Population: 1991.0
- Density: 32.8
- Primary Official County Code: 48299
- Primary Official County Name: Llano
- Official County Name: Llano
- Official County Code: 48299
- Imprecise: FALSE
- Military: FALSE
- Timezone: America/Chicago (12:28 PM Sunday, July 27 2025-07-27 (GMT -0500))
- Geo Point: 30.76314, -98.44875
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