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What county is Georgetown, TX in?

Updated November 1, 2026 · Data: U.S. Census Bureau

Georgetown, Texas is in Williamson County.

Georgetown at a glance

Population78,8033rd largest place in Williamson County

Land area58.1 sq mi1,355 people per sq mi

Share of Williamson County12%of the county's residents live here

County seatYes

Time zoneCentralAmerica/Chicago

Nearest county line13 mito Travis County

How close is Georgetown to a county line?

The center of Georgetown (its Census internal point) is about 13 mi from the Travis County line. Homes near the edge of town can be much closer; if you live near a line, check your address and the lookup will tell you how far you are from it.

What ZIP codes are in Georgetown?

4 ZIP codes use the name Georgetown or are centered in it. Shares are of each ZIP's land; a ZIP named after a town can reach beyond its city limits.

ZIP	Post office name	County (land share)
78626	Georgetown	Williamson County
78627	Georgetown	Williamson County
78628	Georgetown	Williamson County
78633	Georgetown	Williamson County

About Williamson County

County seat: Georgetown. FIPS code 48491. Population 643,889. All Williamson County facts.

Towns near Georgetown

Serenada: 3.1 mi away, Williamson County
Santa Rita Ranch: 7.8 mi away, Williamson County
Round Rock: 10 mi away, Williamson County
Brushy Creek: 11 mi away, Williamson County
Jarrell: 11 mi away, Williamson County
Sonterra: 11 mi away, Williamson County

Georgetown has about 78,803 people. It is an incorporated city or town.

Sources: ACS 2019-2023 5-year (residents by county, table B01003); Census TIGER/Line 2024 and Gazetteer 2024 (land, location); Census 2020 ZCTA file and GeoNames (ZIP codes). Data as of November 1, 2026. Not affiliated with any government agency.

FAQ

Frequently asked questions

What county is Georgetown, TX in?

Georgetown, Texas is in Williamson County. The county seat of Williamson County is Georgetown.

What ZIP codes are in Georgetown, TX?

78626, 78627, 78628, 78633.

Is Georgetown the county seat of Williamson County?

Yes.

What time zone is Georgetown, TX in?

Central time (America/Chicago).

How do I know which county my Georgetown address is in?

Use the address lookup at your home, or check your appraisal district record.

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CountyFinder is an independent website. It is not affiliated with the U.S. Census Bureau, USPS or any county, state or federal agency. County boundaries are from Census TIGER/Line, published for statistical purposes only: they are not a determination of jurisdictional authority or legal land descriptions. For legal or tax purposes, confirm your county with the county.