Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/TX/COUNTY/CASTRO

Castro County, TX ZIP codes

Castro County, TX has 4 ZIP codes, in 4 towns: 79027, 79043, 79063 and 79085. 2 more cross into it from neighbouring counties: 79045 and 79042.

The county seat is Dimmitt.

ZIP codes
4
Partly in it
2 more
Towns
4
County seat
Dimmitt
County FIPS
48069
State
Texas
Population
7,344
Median household income
$56,776
Land area
894 sq mi

Castro County ZIP codes by town

Dimmitt (county seat)
79027

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Castro County

These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Castro County.

Map of Castro County ZIP codes

79027790437906379085

The ZIP codes of Castro County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Castro County in numbers

About 7,344 people live in Castro County, in 2,413 households, the 182nd most populous of Texas's 254 counties. The median household income is $56,776 a year, 28% below the Texas median of $78,476 (US: $80,734). The median owner-occupied home is valued at $95,000 (67% below the Texas median), and median gross rent is $896 a month. The median age is 34.5; 18.6% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 15 minutes.

Population7,344Castro7,344
Households2,413Castro2,413
Median age34.5Castro34.5Texas35.6US 38.9
Median household income$56,776Castro$56,776Texas$78,476US $80,734
Median home value$95,000Castro$95,000Texas$283,800US $332,700
Median gross rent$896Castro$896Texas$1,403US $1,413
Bachelor's degree or higher18.6%Castro18.6%Texas33.8%US 35.7%
Mean commute15.2 minCastro15.2 minTexas26.7 minUS 26.4 min
Population density8 / sq miCastro8 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Castro County

Largest towns in Castro County
TownZIP codesPopulation
Dimmitt 1 4,107
Hart 1 919
Nazareth 1 273

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Castro County.

Not sure you are in Castro County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Castro County, with figures

ZIP codes in Castro County
ZIP City Type Population Median income Median home
79027 Dimmitt , TX Standard 4,858 $50,865 $90,900
79043 Hart , TX Standard 1,462 $57,956 $60,200
79063 Nazareth , TX Standard 665 $110,938 $248,900
79085 Summerfield , TX Standard 0 — —

Cite this page

zipcodes.pro. “Castro County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/tx/county/castro

Underlying data is public domain or openly licensed — sources, vintages and licences.