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

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — STATE/TX/COUNTY/WILLACY

Willacy County, TX ZIP codes

Willacy County, TX has 6 ZIP codes, in 6 towns: 78580, 78569, 78598, 78561, 78590 and 78594.

The county seat is Raymondville.

ZIP codes
6
Towns
6
County seat
Raymondville
County FIPS
48489
State
Texas
Population
20,139
Median household income
$54,180
Land area
591 sq mi
Area code
956
Metro area
Raymondville

Willacy County ZIP codes by town

Raymondville (county seat)
78580

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.

Map of Willacy County ZIP codes

785617856978580785907859478598

The ZIP codes of Willacy 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.

Willacy County in numbers

About 20,139 people live in Willacy County, in 5,691 households, the 121st most populous of Texas's 254 counties. The median household income is $54,180 a year, 31% below the Texas median of $78,476 (US: $80,734). The median owner-occupied home is valued at $73,600 (74% below the Texas median), and median gross rent is $809 a month. The median age is 34.3; 14.0% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 20 minutes.

Population20,139Willacy20,139
Households5,691Willacy5,691
Median age34.3Willacy34.3Texas35.6US 38.9
Median household income$54,180Willacy$54,180Texas$78,476US $80,734
Median home value$73,600Willacy$73,600Texas$283,800US $332,700
Median gross rent$809Willacy$809Texas$1,403US $1,413
Bachelor's degree or higher14.0%Willacy14.0%Texas33.8%US 35.7%
Mean commute19.7 minWillacy19.7 minTexas26.7 minUS 26.4 min
Population density34 / sq miWillacy34 / 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 Willacy County

Largest towns in Willacy County
TownZIP codesPopulation
Raymondville 1 10,185
Lyford 1 2,054
Lasara 1 1,467
Sebastian 1 1,021
San Perlita 1 462
Port Mansfield 1 245

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 Willacy County.

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

Every ZIP code in Willacy County, with figures

ZIP codes in Willacy County
ZIP City Type Population Median income Median home
78561 Lasara , TX Standard 1,457 $102,528 $55,500
78569 Lyford , TX Standard 4,342 $58,950 $117,000
78580 Raymondville , TX Standard 12,964 $53,841 $71,700
78590 San Perlita , TX Standard 428 $82,292 $57,400
78594 Sebastian , TX Standard 1,206 $23,307 $38,300
78598 Port Mansfield , TX Standard 245 — —

Cite this page

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

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