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County ZIP codes · Texas · FIPS 48021

Bastrop County, TX ZIP Codes

Bastrop County, Texas has 14 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Bastrop County and 6 mainly in a neighboring county; 13 cross the county line. Median household income ranges from $60,472 in 78959 (Waelder) to $98,534 in 78621 (Elgin) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Bastrop County?

78602 · Bastrop: $90k78612 · Cedar Creek: $96k78616 · Dale: $65k78617 · Del Valle: $72k78621 · Elgin: $99k78650 · McDade: $85k78653 · Manor: $94k78659 · Paige: $90k78662 · Red Rock: $94k78941 · Flatonia: $77k78942 · Giddings: $73k78953 · Rosanky: $83k78957 · Smithville: $69k78959 · Waelder: $61k786027862178942789417895778616786537895978953786597861278662786177865078602 · Bastrop: $90k78612 · Cedar Creek: $96k78616 · Dale: $65k78617 · Del Valle: $72k78621 · Elgin: $99k78650 · McDade: $85k78653 · Manor: $94k78659 · Paige: $90k78662 · Red Rock: $94k78941 · Flatonia: $77k78942 · Giddings: $73k78953 · Rosanky: $83k78957 · Smithville: $69k78959 · Waelder: $61k786027862178942789417895778616786537895978953786597861278662786177865078602 · Bastrop: $90k78612 · Cedar Creek: $96k78616 · Dale: $65k78617 · Del Valle: $72k78621 · Elgin: $99k78650 · McDade: $85k78653 · Manor: $94k78659 · Paige: $90k78662 · Red Rock: $94k78941 · Flatonia: $77k78942 · Giddings: $73k78953 · Rosanky: $83k78957 · Smithville: $69k78959 · Waelder: $61k78602786217894278941789577861678653789597895378659786127861778650
The residential ZIP codes of Bastrop 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 $69,149 and $89,968.

They carry 14 postal town names.

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

All 14 residential ZIP codes in Bastrop County

8 ZIP codes lie mainly in Bastrop County; 6 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Bastrop County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
78602 Bastrop 38,190 196 $90k $333k 100%
78621 Elgin 30,411 171 $99k $321k 63%
78612 Cedar Creek 19,799 200 $96k $309k 99%
78957 Smithville 10,543 60 $69k $260k 89%
78662 Red Rock 3,015 45 $94k $249k 81%
78659 Paige 2,660 23 $90k $350k 79%
78650 McDade 2,409 38 $85k $300k 71%
78953 Rosanky 1,089 9 $83k $325k 65%

Partly in Bastrop County

Residential ZIP codes mainly in another county that reach at least 1% into Bastrop County, by their share here
In this county
78617 Del Valle 30,756 480 $72k $282k 22%
78616 Dale 10,683 90 $65k $212k 18%
78941 Flatonia 3,619 22 $77k $194k 6%
78942 Giddings 10,136 50 $73k $256k 5%
78653 Manor 41,291 392 $94k $358k 1%
78959 Waelder 1,157 8 $61k – 1%

Download the 14 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?

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

Share of each ZIP code's land in Bastrop County and in the neighboring counties
ZIPIn BastropElsewhere
786531%Travis County 99%
7861722%Travis County 78%
7862163%Travis County 15%; Williamson County 14%; Lee County 9%
7861299%Travis County 1%
7861618%Caldwell County 82%
7895789%Fayette County 11%
789425%Lee County 87%; Fayette County 8%
789416%Fayette County 81%; Gonzales County 13%
7866281%Caldwell County 19%
7865979%Lee County 21%
7865071%Lee County 29%
789591%Gonzales County 80%; Fayette County 16%; Caldwell County 3%
7895365%Caldwell County 35%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Bastrop County's ZIP codes use 2 prefixes: 786 and 789.

Three-digit prefixes of Bastrop 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 Bastrop County's
PrefixSectional centerHereAll codes
786 Austin, TX (SCF 786) 9 75
789 Austin, TX (SCF 786) 5 28

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