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Texas ZIP Codes
Willacy County
San Perlita, TX
78590
78590 ZIP Code — San Perlita, TX
Willacy County, Texas
ZIP code 78590 is located in
San Perlita ,
Texas ,
within Willacy County .
It covers approximately 1.00 square miles and serves a population of
711 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 956 .
About ZIP code 78590
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $47,800. Owner-occupancy sits near the national average at 75%.
Median household income is $32,857. Poverty affects 50% of residents, above the national average.
The dominant occupation class is natural resources, construction, and trades, with education and healthcare as the leading industry. The average commute of 20 minutes is near the national average.
College attainment at 11% is below the national average, consistent with a trades and production-oriented local economy.
Health indicators show elevated rates of obesity (45%), diabetes (18%) compared to national benchmarks. 36% of residents lack health insurance, above the national average.
Notable community characteristics include Spanish spoken in 25% of households.
Overall, ZIP code 78590 reflects a community defined by a trades-oriented workforce and economic challenges above the national average.
78590 ZIP code map
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Cities in ZIP code 78590
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Demographics
updated 05/2026
Population
Total population
711
Population density
711 / sq mi
State FIPS
48
County FIPS
489
Geography
Land area
1.00 sq mi
Water area
0.01 sq mi
Latitude
26.4500
Longitude
-97.5836
Timezone
Central (CT)
Area code
956
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
73.4%
59.7%
39.5%
$50k – $100k
15.6%
28.5%
30.1%
$100k – $200k
10.9%
10.5%
22.6%
Over $200k
0.0%
1.4%
7.8%
Demographics & statistics
$32,857
Median household income
10.5%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 192 27.0% 18 and over 519 73.0% 65 and over 87 12.2% Median age 27.6 years
Race & ethnicity
Group Count % White 617 76.6% Hispanic or Latino 94 11.7% Two or more races 85 10.6% Other race 9 1.1%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
73.4%
59.7%
39.5%
$50k – $100k
15.6%
28.5%
30.1%
$100k – $200k
10.9%
10.5%
22.6%
Over $200k
0.0%
1.4%
7.8%
Range % of households $10k–$15k 2.2% $15k–$25k 15.7% $25k–$35k 36.6% $35k–$50k 9.7% $50k–$75k 6.7% $75k–$100k 4.5% $100k–$150k 14.2% $150k–$200k 10.4% Median income $32,857
Housing
Housing overview
Metric Value Median home value $47,800 Median rent / month $0 Owner occupied 74.6% Renter occupied 25.4% Vacant 27.2% Single-family detached 84.2% Large apartment buildings 0.0% Mobile homes 14.1% Median rooms 6.2 Avg household size (owned) 5.37
Year built
Era % 2020 or later 1.1% 2010–2019 10.9% 2000–2009 0.0% 1990–1999 3.3% 1980–1989 13.6% 1970–1979 37.5% 1960–1969 1.6% 1950–1959 0.0% 1940–1949 10.3% 1939 or earlier 21.7%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 18.5% 2 bedrooms 15.2% 3 bedrooms 41.8% 4 bedrooms 24.5% 5+ bedrooms 0.0%
Vehicles per household
Vehicles % of households No vehicle 3.7% 1 vehicle 26.1% 2 vehicles 29.1% 3 or more 41.0%
Heating fuel
Fuel type % Electricity 95.5% Propane / LP gas 4.5%
Households & families
Household type Count % Married-couple family 93 69.4% Cohabiting couple 3 2.2% Male householder, no spouse 6 4.5% Female householder, no spouse 32 23.9% Households with children under 18 96 71.6% Households with seniors (65+) 45 33.6% Average household size 5.31
Marital status
Status Male Female Never married 44.7% 43.0% Married 44.4% 39.1% Separated 8.2% 1.9% Widowed 0.0% 7.8% Divorced 2.7% 8.1%
Education
Less than 9th grade
30.1%
Some HS, no diploma
15.7%
Some college, no degree
5.5%
Graduate / professional
0.8%
Metric % HS diploma or higher 54.2% Bachelor's or higher 10.5%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 0 0.0% Kindergarten 4 1.7% Elementary school 84 35.6% High school 86 36.4% College / grad school 62 26.3%
Employment
Industry of employment
Education & healthcare
29.6%
Public administration
16.8%
Professional & management
13.2%
Transportation & utilities
10.8%
Arts, food & hospitality
10.0%
Agriculture & mining
9.2%
Occupation
Category % Management, business & arts 14.0% Service 23.6% Sales & office 22.8% Natural resources & construction 24.0% Production & transportation 15.6%
Employment type
Type % Private sector 47.6% Government 40.4% Self-employed 12.0% Unpaid family workers 0.0%
Commute
Method % Drive alone 86.4% Carpool 4.8% Public transit 0.0% Walk 6.8% Work from home 2.0% Other means 0.0% Avg commute (minutes) 20.2
Poverty
Married-couple families
59.1%
Female-led households
28.6%
Income support
Source % of households Social Security 29.1% Retirement income 15.7% Supplemental Security 5.2% Cash public assistance 3.7% Food stamps / SNAP 14.2%
Health indicators
Condition % Obesity 45.2% High blood pressure 35.3% High cholesterol 35.3% Diabetes 18.2% Heart disease 6.9% Stroke 3.5% Asthma 9.5% Arthritis 21.7% Kidney disease 3.9% Pulmonary disease 6.8% Cancer 4.3%
Behavior / access % Smoking 19.8% Binge drinking 16.2% No physical activity 39.5% Less than 7 hrs sleep 36.1% Depression 21.1% Fair or poor health 30.2% Poor mental health 17.1% Poor physical health 15.9% No health insurance 50.0% Visited doctor (checkup) 69.3% Visited dentist 39.8% Cholesterol screening 84.4% Teeth loss 20.7%
Veterans & disability
Veterans Count % Civilian veterans 11 2.1%
Disability % Any disability 18.6% Under 18 16.1% 18–64 years 15.0% 65 and over 41.4%
Health insurance coverage
Type % Private insurance 36.7% Public insurance 30.0% No insurance 36.1% Uninsured under 19 28.6%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 675 94.9% Spanish 171 25.3% Other Indo-European 171 25.3% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 536 75.4% Born in same state 535 75.2% Born in different state 525 73.8% Foreign born 1 0.1% Naturalized citizen 175 24.6% Not a US citizen 106 60.6%
Ancestry
Ancestry Count % Italian 1 0.1%
Technology access
Metric % of households Computer access 18.8% Internet access 85.1%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 78590
What city is ZIP code 78590 in?
ZIP code 78590 is primarily assigned to San Perlita, Texas.
What county is ZIP code 78590 in?
ZIP code 78590 falls within Willacy County, Texas.
What is the poverty rate in ZIP code 78590?
50% of residents in ZIP code 78590 live below the poverty line, above the national average.
Is Spanish widely spoken in ZIP code 78590?
Approximately 25% of households in ZIP code 78590 speak Spanish as a primary language.
How educated is the population of ZIP code 78590?
11% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
What is the typical home value in ZIP code 78590?
The median home value in ZIP code 78590 is $47,800.
What timezone is ZIP code 78590 in?
ZIP code 78590 observes the CST timezone.
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