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City ZIP codes · Texas

Georgetown, TX ZIP Codes

4 ZIP codes use the postal name Georgetown, Texas (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 3 residential and 1 for PO boxes or a single organization. Median household income runs from $100,431 in 78626 to $125,635 in 78628, 1.3 times as much (Census Bureau, ACS 2020-2024). Georgetown's most populous ZIP code is 78628, with 50,822 people (ACS 2020-2024); 30% of its land is in the city of Georgetown.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Georgetown's ZIP codes?

78626: $100k median household income78628: $126k median household income78633: $101k median household income78626786337862878626: $100k median household income78628: $126k median household income78633: $101k median household income78626786337862878626: $100k median household income78628: $126k median household income78633: $101k median household income786267863378628
The 3 residential ZIP codes named Georgetown, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$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 Georgetown's ZIP codes?

The highest median household income is in 78628 ($125,635), the lowest in 78626 ($100,431). Home values run from $387,700 in 78626 to $496,600 in 78628.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 3 residential ZIP codes of Georgetown

Residential ZIP codes with the postal name Georgetown, TX, largest first (ACS 2020-2024); sort by any column
County
78628 Williamson County 50,822 785 $126k $497k
78626 Williamson County 48,072 543 $100k $388k
78633 Williamson County 29,309 374 $101k $465k

Download the 4 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Georgetown

1 ZIP code named Georgetown has no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Georgetown, TX: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
78627Williamson County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Georgetown's ZIP codes reach?

Georgetown's residential ZIP codes lie in Williamson County.

Which places do Georgetown's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Georgetown's residential ZIP codes cover Georgetown itself and 2 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

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

Which first three digits do Georgetown's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Georgetown starts with 786.

Three-digit prefixes of Georgetown'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 Georgetown's
PrefixSectional centerHereAll codes
786 Austin, TX (SCF 786) 4 75

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