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Texas ZIP Codes
Willacy County
Sebastian, TX
78594
78594 ZIP Code — Sebastian, TX
Willacy County, Texas
ZIP code 78594 is located in
Sebastian ,
Texas ,
within Willacy County .
It covers approximately 3.17 square miles and serves a population of
1,398 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 956 .
About ZIP code 78594
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $54,100. Owner-occupancy sits near the national average at 72%.
Median household income is $23,258. Poverty affects 39% of residents, above the national average. SNAP benefit usage at 21% of households reflects economic stress in the area. 58% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is natural resources, construction, and trades, with construction as the leading industry. The average commute of 28 minutes is near the national average.
College attainment at 5% is below the national average, consistent with a trades and production-oriented local economy.
Health indicators show elevated rates of diabetes (18%) compared to national benchmarks. 38% of residents lack health insurance, above the national average.
Notable community characteristics include Spanish spoken in 26% of households; and disability rates above the national average at 26%.
Overall, ZIP code 78594 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, a significant Social Security-dependent population, and elevated reliance on food assistance.
78594 ZIP code map
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Cities in ZIP code 78594
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Demographics
updated 06/2026
Population
Total population
1,398
Population density
441 / sq mi
State FIPS
48
County FIPS
489
Geography
Land area
3.17 sq mi
Water area
0.02 sq mi
Latitude
26.3499
Longitude
-97.7187
Timezone
Central (CT)
Area code
956
Economics
updated 06/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
69.6%
59.7%
39.5%
$50k – $100k
23.9%
28.5%
30.1%
$100k – $200k
4.7%
10.5%
22.6%
Over $200k
1.8%
1.4%
7.8%
Demographics & statistics
$23,258
Median household income
Age distribution
Age summary
Group Count % Under 18 207 14.8% 18 and over 1,191 85.2% 65 and over 420 30.0% Median age 46.7 years
Race & ethnicity
American Indian / Alaska Native
5.7%
Group Count % White 845 46% Two or more races 449 24.5% Hispanic or Latino 437 23.8% American Indian / Alaska Native 104 5.7%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
69.6%
59.7%
39.5%
$50k – $100k
23.9%
28.5%
30.1%
$100k – $200k
4.7%
10.5%
22.6%
Over $200k
1.8%
1.4%
7.8%
Range % of households Under $10k 21.4% $10k–$15k 13.4% $15k–$25k 23.3% $25k–$35k 3.4% $35k–$50k 6.7% $50k–$75k 18.4% $75k–$100k 12.0% $100k–$150k 1.3% Median income $23,258
Housing
Housing overview
Metric Value Median home value $54,100 Median rent / month $382 Owner occupied 72.3% Renter occupied 27.7% Vacant 11.8% Single-family detached 77.9% Large apartment buildings 5.9% Mobile homes 6.9% Median rooms 4.8 Avg household size (owned) 3.04
Year built
Era % 2020 or later 0.0% 2010–2019 10.1% 2000–2009 23.4% 1990–1999 17.9% 1980–1989 4.4% 1970–1979 17.2% 1960–1969 16.7% 1950–1959 8.6% 1940–1949 0.0% 1939 or earlier 1.7%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 20.4% 2 bedrooms 24.3% 3 bedrooms 44.0% 4 bedrooms 11.3% 5+ bedrooms 0.0%
Vehicles per household
Vehicles % of households No vehicle 9.0% 1 vehicle 44.9% 2 vehicles 35.0% 3 or more 11.1%
Heating fuel
Fuel type % Utility gas 6.3% Electricity 78.0% Propane / LP gas 10.1% Wood 5.5%
Households & families
Household type Count % Married-couple family 237 45.3% Cohabiting couple 7 1.3% Male householder, no spouse 84 16.1% Female householder, no spouse 195 37.3% Households with children under 18 152 29.1% Households with seniors (65+) 289 55.3% Average household size 2.67
Marital status
Status Male Female Never married 37.9% 29.9% Married 48.2% 36.7% Separated 2.5% 1.2% Widowed 3.8% 13.5% Divorced 7.6% 18.7%
Education
Less than 9th grade
25.1%
Some HS, no diploma
17.9%
Some college, no degree
15.8%
Graduate / professional
0.0%
Metric % HS diploma or higher 57.0% Bachelor's or higher 5.1%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 7 3.2% Kindergarten 17 7.8% Elementary school 65 29.7% High school 65 29.7% College / grad school 65 29.7%
Employment
Industry of employment
Agriculture & mining
15.8%
Education & healthcare
14.3%
Arts, food & hospitality
10.8%
Finance & real estate
6.1%
Professional & management
1.9%
Public administration
1.9%
Occupation
Category % Management, business & arts 14.1% Service 13.4% Sales & office 19.9% Natural resources & construction 34.5% Production & transportation 18.2%
Employment type
Type % Private sector 76.8% Government 5.2% Self-employed 18.0% Unpaid family workers 0.0%
Commute
Method % Drive alone 80.3% Carpool 11.7% Public transit 0.0% Walk 0.0% Work from home 8.0% Other means 0.0% Avg commute (minutes) 28.0
Poverty
Married-couple families
24.5%
Female-led households
50.6%
Income support
Source % of households Social Security 57.6% Retirement income 17.2% Supplemental Security 9.6% Cash public assistance 0.0% Food stamps / SNAP 20.5%
Health indicators
Condition % Obesity 43.7% High blood pressure 35.0% High cholesterol 35.7% Diabetes 17.6% Heart disease 6.7% Stroke 3.1% Asthma 8.5% Arthritis 20.9% Kidney disease 3.6% Pulmonary disease 5.3% Cancer 4.7%
Behavior / access % Smoking 15.3% Binge drinking 16.1% No physical activity 34.3% Less than 7 hrs sleep 34.6% Depression 18.7% Fair or poor health 24.8% Poor mental health 14.6% Poor physical health 13.4% No health insurance 44.1% Visited doctor (checkup) 70.5% Visited dentist 47.6% Cholesterol screening 88.4% Teeth loss 14.1%
Veterans & disability
Veterans Count % Civilian veterans 33 2.8%
Disability % Any disability 26.3% Under 18 0.0% 18–64 years 13.0% 65 and over 63.8%
Health insurance coverage
Type % Private insurance 19.0% Public insurance 47.8% No insurance 38.2% Uninsured under 19 40.6%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 1,338 95.7% Spanish 349 26.1% Other Indo-European 349 26.1% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 1,086 77.7% Born in same state 1,086 77.7% Born in different state 1,036 74.1% Foreign born 0 0.0% Naturalized citizen 312 22.3% Not a US citizen 56 17.9%
Ancestry
Ancestry Count % Dutch 9 0.6%
Technology access
Metric % of households Computer access 37.4% Internet access 79.9%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 78594
What city is ZIP code 78594 in?
ZIP code 78594 is primarily assigned to Sebastian, Texas.
What county is ZIP code 78594 in?
ZIP code 78594 falls within Willacy County, Texas.
What is the poverty rate in ZIP code 78594?
39% of residents in ZIP code 78594 live below the poverty line, above the national average.
Does ZIP code 78594 have a large retiree population?
58% of households in ZIP code 78594 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 78594 have an older population?
30% of residents in ZIP code 78594 are 65 or older, above the national average of ~17%.
How educated is the population of ZIP code 78594?
5% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
What timezone is ZIP code 78594 in?
ZIP code 78594 observes the CST timezone.
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