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What county is Brownsville, TX in?

Updated · Data: U.S. Census Bureau

Brownsville, Texas is in Cameron County.

Brownsville at a glance

Population188,023Largest place in Cameron County
Land area133.4 sq mi1,410 people per sq mi
Share of Cameron County44%of the county's residents live here
County seatYes
Time zoneCentralAmerica/Chicago
Nearest county line22 mito Willacy County

How close is Brownsville to a county line?

The center of Brownsville (its Census internal point) is about 22 mi from the Willacy 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 Brownsville?

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

ZIPPost office nameCounty (land share)
78520BrownsvilleCameron County
78521BrownsvilleCameron County
78522BrownsvilleCameron County
78523BrownsvilleCameron County
78526BrownsvilleCameron County
78578Port IsabelCameron County

About Cameron County

County seat: Brownsville. FIPS code 48061. Population 423,192. All Cameron County facts.

Towns near Brownsville

  • Cameron Park: 2.4 mi away, Cameron County
  • Los Fresnos: 5.9 mi away, Cameron County
  • Olmito: 6.0 mi away, Cameron County
  • Rancho Viejo: 7.1 mi away, Cameron County
  • Indian Lake: 7.1 mi away, Cameron County
  • Laureles: 8.9 mi away, Cameron County

Brownsville has about 188,023 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 Brownsville, TX in?
Brownsville, Texas is in Cameron County. The county seat of Cameron County is Brownsville.
What ZIP codes are in Brownsville, TX?
78520, 78521, 78522, 78523, 78526, 78578.
Is Brownsville the county seat of Cameron County?
Yes.
What time zone is Brownsville, TX in?
Central time (America/Chicago).
How do I know which county my Brownsville address is in?
Use the address lookup at your home, or check your appraisal district record.

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