78582 ZIP Code — Rio Grande City, TX

Starr County, Texas

ZIP code 78582 is located in Rio Grande City, Texas, within Starr County. It covers approximately 565.25 square miles and serves a population of 44,988 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 956.

About ZIP code 78582

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 $97,700. Owner-occupancy sits near the national average at 75%.

Median household income is $40,221. Poverty affects 32% of residents, above the national average. SNAP benefit usage at 36% of households reflects economic stress in the area.

The dominant occupation class is service, with education and healthcare as the leading industry. The average commute of 24 minutes is near the national average.

College attainment at 12% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of diabetes (19%), smoking (22%) compared to national benchmarks. 34% of residents lack health insurance, above the national average.

Notable community characteristics include Spanish spoken in 34% of households.

Overall, ZIP code 78582 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, and elevated reliance on food assistance.

44,988

population

565.25

sq mi land

Standard

ZIP type

Central (CT)

timezone

78582 ZIP code map

Cities in ZIP code 78582

Below are the cities the US Postal Service accepts for ZIP code 78582. Using any city not on this list may result in mail delivery delays.

City	Status
Rio Grande City	Acceptable
Rio Grande City	Preferred

Nearby ZIP codes

78591 Santa Elena (17.2 mi) 78595 Sullivan City (18.8 mi) 78536 Delmita (19.6 mi)

Demographics updated 06/2026

Population
Total population	44,988
Population density	80 / sq mi
State FIPS	48
County FIPS	427

Geography
Land area	565.25 sq mi
Water area	1.56 sq mi
Latitude	26.5103
Longitude	-98.6752
Timezone	Central (CT)
Area code	956

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	66.6%	70.3%	39.5%
$50k – $100k	19.2%	18.5%	30.1%
$100k – $200k	11.3%	9.1%	22.6%
Over $200k	2.9%	2.2%	7.8%

Demographics & statistics

44,988

Population

People per sq mi

28.0

Median age

$40,221

Median household income

$17,846

Per capita income

$97,700

Median home value

$696

Median monthly rent

74.5%

Home ownership

32.4%

Poverty rate

11.3%

Unemployment

11,637

Housing units

12.3%

Bachelor's or higher

Age distribution

Male Female

1,926

Under 5

1,963

2,098

5–9

2,139

2,115

10–14

2,156

2,115

15–19

2,155

1,909

20–24

1,946

2,912

25–34

2,969

2,798

35–44

2,852

2,582

45–54

2,633

801

55–59

817

864

60–64

880

1,188

65–74

1,212

588

75–84

599

382

85+

389

← Male

Female →

Age summary

Group	Count	%
Under 18	14,972	33.3%
18 and over	30,016	66.7%
65 and over	4,358	9.7%
Median age	28.0 years

Race & ethnicity

White 41.3%

Hispanic or Latino 29.2%

Two or more races 24.6%

Other race 4.7%

Black or African American 0.1%

American Indian / Alaska Native 0.1%

Asian 0.1%

Group	Count	%
White	26,256	41.3%
Hispanic or Latino	18,534	29.2%
Two or more races	15,596	24.6%
Other race	3,006	4.7%
Black or African American	51	0.1%
American Indian / Alaska Native	45	0.1%
Asian	34	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	66.6%	70.3%	39.5%
$50k – $100k	19.2%	18.5%	30.1%
$100k – $200k	11.3%	9.1%	22.6%
Over $200k	2.9%	2.2%	7.8%

Under $10k 11.6%

$10k–$15k 11.1%

$15k–$25k 12.8%

$25k–$35k 9.6%

$35k–$50k 16.3%

$50k–$75k 12.5%

$75k–$100k 9.3%

$100k–$150k 11.0%

$150k–$200k 3.0%

$200k+ 2.9%

Range	% of households
Under $10k	11.6%
$10k–$15k	11.1%
$15k–$25k	12.8%
$25k–$35k	9.6%
$35k–$50k	16.3%
$50k–$75k	12.5%
$75k–$100k	9.3%
$100k–$150k	11.0%
$150k–$200k	3.0%
$200k+	2.9%
Median income	$40,221

Housing

Home values

Under $50k 19.5%

$50k–$100k 32.0%

$100k–$150k 19.7%

$150k–$200k 11.3%

$200k–$300k 10.7%

$300k–$500k 5.2%

$500k–$1M 1.4%

$1M+ 0.3%

Housing overview

Metric	Value
Median home value	$97,700
Median rent / month	$696
Owner occupied	74.5%
Renter occupied	25.5%
Vacant	16.1%
Single-family detached	80.1%
Large apartment buildings	1.0%
Mobile homes	10.3%
Median rooms	5.0
Avg household size (owned)	3.66

Year built

Era	%
2020 or later	0.3%
2010–2019	14.3%
2000–2009	22.3%
1990–1999	20.3%
1980–1989	18.8%
1970–1979	12.1%
1960–1969	5.7%
1950–1959	2.8%
1940–1949	1.8%
1939 or earlier	1.5%

Bedrooms

Size	% of units
No bedroom (studio)	2.7%
1 bedroom	7.4%
2 bedrooms	23.9%
3 bedrooms	48.7%
4 bedrooms	15.6%
5+ bedrooms	1.7%

Vehicles per household

Vehicles	% of households
No vehicle	9.4%
1 vehicle	34.1%
2 vehicles	32.2%
3 or more	24.3%

Heating fuel

Fuel type	%
Utility gas	4.3%
Electricity	90.2%
Propane / LP gas	3.2%
Fuel oil	0.3%
Wood	0.1%
No fuel used	1.8%

Households & families

Household type	Count	%
Married-couple family	5,903	47.5%
Cohabiting couple	429	3.5%
Male householder, no spouse	1,591	12.8%
Female householder, no spouse	4,499	36.2%
Households with children under 18	6,289	50.6%
Households with seniors (65+)	2,981	24.0%
Average household size	3.57

Marital status

Status	Male	Female
Never married	40.7%	35.0%
Married	45.9%	39.1%
Separated	4.1%	8.4%
Widowed	2.4%	10.5%
Divorced	6.8%	7.0%

Education

Less than 9th grade 24.1%

Some HS, no diploma 14.1%

HS graduate 27.5%

Some college, no degree 17.0%

Associate's degree 5.0%

Bachelor's degree 8.9%

Graduate / professional 3.5%

Metric	%
HS diploma or higher	61.9%
Bachelor's or higher	12.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	1,263	8.4%
Kindergarten	674	4.5%
Elementary school	6,919	45.9%
High school	3,331	22.1%
College / grad school	2,878	19.1%

Employment

Industry of employment

Education & healthcare 35.1%

Construction 12.8%

Retail trade 11.5%

Transportation & utilities 7.4%

Arts, food & hospitality 6.9%

Public administration 5.3%

Agriculture & mining 4.9%

Other services 4.8%

Professional & management 4.0%

Manufacturing 3.8%

Finance & real estate 2.7%

Wholesale trade 0.5%

Information 0.4%

Occupation

Category	%
Management, business & arts	25.9%
Service	26.8%
Sales & office	15.5%
Natural resources & construction	16.9%
Production & transportation	15.0%

Employment type

Type	%
Private sector	65.8%
Government	22.5%
Self-employed	11.3%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	73.1%
Carpool	15.9%
Public transit	0.0%
Walk	3.5%
Work from home	6.6%
Other means	0.9%
Avg commute (minutes)	24.1

Poverty

All people 32.4%

Under 18 years 40.3%

18 and over 28.3%

Married-couple families 17.9%

Female-led households 47.5%

Income support

Source	% of households
Social Security	26.9%
Retirement income	14.0%
Supplemental Security	11.7%
Cash public assistance	0.9%
Food stamps / SNAP	36.2%

Health indicators

Condition	%
Obesity	44.0%
High blood pressure	35.2%
High cholesterol	33.4%
Diabetes	18.6%
Heart disease	7.3%
Stroke	3.7%
Asthma	9.8%
Arthritis	20.9%
Kidney disease	4.2%
Pulmonary disease	7.1%
Cancer	3.9%

Behavior / access	%
Smoking	22.4%
Binge drinking	16.1%
No physical activity	43.2%
Less than 7 hrs sleep	36.6%
Depression	21.4%
Fair or poor health	34.3%
Poor mental health	18.0%
Poor physical health	17.2%
No health insurance	55.1%
Visited doctor (checkup)	68.7%
Visited dentist	35.1%
Cholesterol screening	82.1%
Teeth loss	24.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	603	2.0%

Disability	%
Any disability	14.2%
Under 18	4.4%
18–64 years	14.0%
65 and over	50.0%

Health insurance coverage

Type	%
Private insurance	30.4%
Public insurance	39.0%
No insurance	33.8%
Uninsured under 19	22.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	41,099	91.4%
Spanish	13,786	33.5%
Other Indo-European	13,781	33.5%
Asian & Pacific Islander	0	0.0%
Other languages	5	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	34,052	75.7%
Born in same state	33,459	74.4%
Born in different state	31,190	69.3%
Foreign born	593	1.3%
Naturalized citizen	10,936	24.3%
Not a US citizen	3,092	28.3%

Ancestry

Ancestry	Count	%
Arab	294	0.7%
Italian	217	0.5%
French	107	0.2%

Ancestry	Count	%
Polish	9	0%
Dutch	2	0%

Technology access

Metric	% of households
Computer access	27.6%
Internet access	88.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 78582

What city is ZIP code 78582 in?

ZIP code 78582 is primarily assigned to Rio Grande City, Texas.

What county is ZIP code 78582 in?

ZIP code 78582 falls within Starr County, Texas.

Is Spanish widely spoken in ZIP code 78582?

Approximately 34% of households in ZIP code 78582 speak Spanish as a primary language.

Is ZIP code 78582 family-oriented?

33% of residents in ZIP code 78582 are under 18, reflecting a younger, family-oriented community.

What is the poverty rate in ZIP code 78582?

32% of residents in ZIP code 78582 live below the poverty line, above the national average.

How educated is the population of ZIP code 78582?

12% 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 78582 in?

ZIP code 78582 observes the CST timezone.