Home > TX > Llano County > Buchanan Dam > Zip 78609

Zip Code 78609 — Buchanan Dam, TX

78609 is a ZIP Code associated with Buchanan Dam, TX, located within Llano. The postal region supports an estimated population of 1,983 residents across Data Pending housing units, with a population density of 48.2 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (30.759750, -98.452710)

Data MetricLocal Statistic
Postal / Zip Code78609
Primary CityBuchanan Dam
State / ProvinceTX
CountyLlano
Total Population1,983
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density48.2 people/sq mi
TimezoneAmerica/Chicago

How 78609 Compares

MetricZIP 78609Llano CountyTX State Average
Population1,98326,21130,188,035
Median IncomeData PendingN/AN/A
Population Density48.2 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 78607Bluffton4.6 mi118N/A
Zip 78639Kingsland7.0 mi8,719N/A
Zip 78672Tow8.7 mi570N/A
Zip 78611Burnet11.3 mi14,560N/A
Zip 76824Bend12.5 miN/AN/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →