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County ZIP codes · Texas · FIPS 48031

Blanco County, TX ZIP Codes

Blanco County, Texas has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 4 of the residential ones lie mainly in Blanco County and 4 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $87,344 in 78676 (Wimberley) to $153,477 in 78620 (Dripping Springs) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Blanco County?

78070 · Spring Branch: $115k78606 · Blanco: $95k78620 · Dripping Springs: $154k78635 · Hye: $107k78636 · Johnson City: $73k78663 · Round Mountain: $168k78669 · Spicewood: $128k78676 · Wimberley: $87k786367860678663786767862078669780707863578070 · Spring Branch: $115k78606 · Blanco: $95k78620 · Dripping Springs: $154k78635 · Hye: $107k78636 · Johnson City: $73k78663 · Round Mountain: $168k78669 · Spicewood: $128k78676 · Wimberley: $87k786367860678663786767862078669780707863578070 · Spring Branch: $115k78606 · Blanco: $95k78620 · Dripping Springs: $154k78635 · Hye: $107k78636 · Johnson City: $73k78663 · Round Mountain: $168k78669 · Spicewood: $128k78676 · Wimberley: $87k78636786067866378676786207866978070
The residential ZIP codes of Blanco County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $94,817 and $128,000.

They carry 8 postal town names: Dripping Springs, Spring Branch, Wimberley, Spicewood, Blanco, Johnson City, Round Mountain, Hye.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 8 residential ZIP codes in Blanco County

4 ZIP codes lie mainly in Blanco County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Blanco County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
78606 Blanco 7,272 30 $95k $438k 75%
78636 Johnson City 4,134 12 $73k $533k 100%
78663 Round Mountain 503 5 $168k $357k 93%
78635 Hye 92 5 $107k – 100%

Partly in Blanco County

Residential ZIP codes mainly in another county that reach at least 1% into Blanco County, by their share here
In this county
78669 Spicewood 12,592 104 $128k $671k 19%
78070 Spring Branch 20,200 152 $115k $517k 8%
78676 Wimberley 15,822 94 $87k $512k 7%
78620 Dripping Springs 22,860 130 $154k $677k 5%

Download the 8 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

6 ZIP codes of Blanco County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Blanco County and in the neighboring counties
ZIPIn BlancoElsewhere
786205%Hays County 85%; Travis County 10%
780708%Comal County 82%; Kendall County 10%
786767%Hays County 92%
7866919%Travis County 44%; Burnet County 37%
7860675%Kendall County 21%; Comal County 4%
7866393%Travis County 4%; Hays County 2%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Blanco County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Blanco County's ZIP codes use 2 prefixes: 780 and 786.

Three-digit prefixes of Blanco County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Blanco County's
PrefixSectional centerHereAll codes
780 San Antonio, TX (SCF 780) 1 59
786 Austin, TX (SCF 786) 7 75

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.