Blanco County, Texas
Updated · Data: U.S. Census Bureau
Blanco County, Texas has its county seat in Johnson City and FIPS code 48031. About 12,008 people live here, the 155th most populated of the 254 Texas counties.
| County seat | Johnson City |
|---|---|
| FIPS code | 48031 (Texas 48 + county 031) · all Texas FIPS codes |
| Population | 12,008 (155th of 254) |
| Land area | 709.3 sq mi (213th largest; + 4.2 sq mi water) |
| People per sq mi | 16.9 |
| Time zone | Central time (America/Chicago) |
| Median home value | $396,200 |
| Median property tax paid | $4,134 a year (about 1.04% of the median home value: our calculation, not an official rate) |
| Official website | www.co.blanco.tx.us |
What counties border Blanco County?
Blanco County shares a border with 7 counties:
What cities and towns are in Blanco County?
2 places with 1,000+ people have residents here; together they hold about 36% of the county's population. The rest live in smaller communities and rural areas.
| Place | Population | Residents in this county |
|---|---|---|
| Blanco | 2,336 | 100.0% |
| Johnson City | 1,952 | 100.0% |
CDP = census-designated place: a named community with no city government.
What ZIP codes are in Blanco County?
8 ZIP code areas with residents touch Blanco County; the ones marked * cross into another county.
Mailing names in Blanco County that are not cities
These names appear in addresses here but are not Census places: Spicewood.
Check an exact address with the address lookup, look up a ZIP code, or see how to confirm your county with official records.
Sources: Census TIGER/Line 2024 (boundary, area, neighbors); ACS 2019-2023 5-year (population, home value, taxes paid); Wikidata, CC0 (seat, website); timezone-boundary-builder (time zone). Data as of November 1, 2026. Not affiliated with any government agency.
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