78548 ZIP Code — Grulla, TX

Starr County, Texas

ZIP code 78548 is located in Grulla, Texas, within Starr County. It covers approximately 7.48 square miles and serves a population of 1,384 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 956.

About ZIP code 78548

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 $43,100. Owner-occupancy is high at 80%, well above the national average.

Median household income is $39,306. Poverty affects 25% of residents, above the national average. SNAP benefit usage at 37% of households reflects economic stress in the area. 45% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is service, with education and healthcare as the leading industry. The average commute of 23 minutes is near the national average.

Health indicators show elevated rates of diabetes (21%), smoking (21%) compared to national benchmarks. 19% of residents lack health insurance, above the national average.

Notable community characteristics include Spanish spoken in 23% of households.

Overall, ZIP code 78548 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.

1,384

population

7.48

sq mi land

Standard

ZIP type

Central (CT)

timezone

78548 ZIP code map

Cities in ZIP code 78548

Below are the cities the US Postal Service accepts for ZIP code 78548. Using any city not on this list may result in mail delivery delays.

City	Status
Grulla	Acceptable

Demographics updated 06/2026

Population
Total population	1,384
Population density	185 / sq mi
State FIPS	48
County FIPS	427

Geography
Land area	7.48 sq mi
Water area	0.00 sq mi
Latitude	26.3803
Longitude	-98.5490
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	58.7%	70.3%	39.5%
$50k – $100k	28.1%	18.5%	30.1%
$100k – $200k	13.2%	9.1%	22.6%
Over $200k	0.0%	2.2%	7.8%

Demographics & statistics

1,384

Population

185

People per sq mi

33.0

Median age

$39,306

Median household income

$16,521

Per capita income

$43,100

Median home value

$783

Median monthly rent

80.1%

Home ownership

24.7%

Poverty rate

8.0%

Unemployment

508

Housing units

2.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

131

10–14

123

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	449	32.4%
18 and over	935	67.6%
65 and over	168	12.1%
Median age	33.0 years

Race & ethnicity

Hispanic or Latino 34.5%

Two or more races 34.5%

White 31.1%

Group	Count	%
Hispanic or Latino	728	34.5%
Two or more races	728	34.5%
White	656	31.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	58.7%	70.3%	39.5%
$50k – $100k	28.1%	18.5%	30.1%
$100k – $200k	13.2%	9.1%	22.6%
Over $200k	0.0%	2.2%	7.8%

Under $10k 8.4%

$10k–$15k 16.7%

$15k–$25k 15.6%

$25k–$35k 7.9%

$35k–$50k 18.4%

$50k–$75k 11.3%

$75k–$100k 7.7%

$100k–$150k 11.1%

$150k–$200k 2.8%

Range	% of households
Under $10k	8.4%
$10k–$15k	16.7%
$15k–$25k	15.6%
$25k–$35k	7.9%
$35k–$50k	18.4%
$50k–$75k	11.3%
$75k–$100k	7.7%
$100k–$150k	11.1%
$150k–$200k	2.8%
Median income	$39,306

Housing

Home values

Under $50k 61.0%

$50k–$100k 35.3%

$100k–$150k 1.1%

$150k–$200k 2.7%

Housing overview

Metric	Value
Median home value	$43,100
Median rent / month	$783
Owner occupied	80.1%
Renter occupied	19.9%
Vacant	22.3%
Single-family detached	95.5%
Large apartment buildings	0.0%
Mobile homes	4.5%
Median rooms	5.0
Avg household size (owned)	3.11

Year built

Era	%
2020 or later	0.0%
2010–2019	7.7%
2000–2009	11.3%
1990–1999	18.3%
1980–1989	18.1%
1970–1979	25.6%
1960–1969	11.5%
1950–1959	1.3%
1940–1949	1.8%
1939 or earlier	4.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.8%
1 bedroom	8.3%
2 bedrooms	23.8%
3 bedrooms	50.1%
4 bedrooms	16.1%
5+ bedrooms	0.8%

Vehicles per household

Vehicles	% of households
No vehicle	15.6%
1 vehicle	25.7%
2 vehicles	34.3%
3 or more	24.4%

Heating fuel

Fuel type	%
Electricity	95.3%
Propane / LP gas	2.4%
No fuel used	2.4%

Households & families

Household type	Count	%
Married-couple family	175	37.5%
Cohabiting couple	33	7.1%
Male householder, no spouse	90	19.3%
Female householder, no spouse	169	36.2%
Households with children under 18	204	43.7%
Households with seniors (65+)	157	33.6%
Average household size	2.96

Marital status

Status	Male	Female
Never married	48.8%	33.0%
Married	34.5%	39.5%
Separated	3.0%	2.0%
Widowed	9.2%	14.5%
Divorced	4.6%	11.0%

Education

Less than 9th grade 26.6%

Some HS, no diploma 9.2%

HS graduate 34.7%

Some college, no degree 23.5%

Associate's degree 4.0%

Bachelor's degree 2.0%

Graduate / professional 0.0%

Metric	%
HS diploma or higher	64.2%
Bachelor's or higher	2.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	13	2.3%
Elementary school	310	54.0%
High school	125	21.8%
College / grad school	126	22.0%

Employment

Industry of employment

Education & healthcare 51.0%

Retail trade 15.0%

Public administration 7.4%

Construction 6.5%

Arts, food & hospitality 3.8%

Transportation & utilities 3.6%

Agriculture & mining 3.4%

Wholesale trade 3.0%

Professional & management 2.3%

Other services 2.1%

Finance & real estate 1.9%

Occupation

Category	%
Management, business & arts	17.7%
Service	31.4%
Sales & office	11.8%
Natural resources & construction	15.4%
Production & transportation	23.8%

Employment type

Type	%
Private sector	81.4%
Government	15.6%
Self-employed	3.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	79.7%
Carpool	6.8%
Public transit	0.0%
Walk	2.1%
Work from home	10.5%
Other means	1.0%
Avg commute (minutes)	23.3

Poverty

All people 24.7%

Under 18 years 26.9%

18 and over 23.6%

Married-couple families 14.3%

Female-led households 34.5%

Income support

Source	% of households
Social Security	45.0%
Retirement income	10.7%
Supplemental Security	15.8%
Cash public assistance	1.9%
Food stamps / SNAP	36.8%

Health indicators

Condition	%
Obesity	43.9%
High blood pressure	37.7%
High cholesterol	36.1%
Diabetes	20.7%
Heart disease	8.4%
Stroke	4.1%
Asthma	9.7%
Arthritis	23.1%
Kidney disease	4.6%
Pulmonary disease	7.4%
Cancer	4.5%

Behavior / access	%
Smoking	20.7%
Binge drinking	15.1%
No physical activity	43.5%
Less than 7 hrs sleep	36.0%
Depression	20.8%
Fair or poor health	34.8%
Poor mental health	17.4%
Poor physical health	17.5%
No health insurance	54.7%
Visited doctor (checkup)	70.5%
Visited dentist	36.4%
Cholesterol screening	84.2%
Teeth loss	23.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	10	1.1%

Disability	%
Any disability	21.2%
Under 18	12.7%
18–64 years	16.6%
65 and over	64.9%

Health insurance coverage

Type	%
Private insurance	41.4%
Public insurance	40.8%
No insurance	19.4%
Uninsured under 19	10.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,334	96.4%
Spanish	302	22.6%
Other Indo-European	302	22.6%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,144	82.7%
Born in same state	1,134	81.9%
Born in different state	977	70.6%
Foreign born	10	0.7%
Naturalized citizen	240	17.3%
Not a US citizen	77	32.1%

Technology access

Metric	% of households
Computer access	33.7%
Internet access	88.2%

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

Frequently asked questions about ZIP code 78548

What city is ZIP code 78548 in?

ZIP code 78548 is primarily assigned to Grulla, Texas.

What county is ZIP code 78548 in?

ZIP code 78548 falls within Starr County, Texas.

Is ZIP code 78548 family-oriented?

32% of residents in ZIP code 78548 are under 18, reflecting a younger, family-oriented community.

What is the poverty rate in ZIP code 78548?

25% of residents in ZIP code 78548 live below the poverty line, above the national average.

Is Spanish widely spoken in ZIP code 78548?

Approximately 23% of households in ZIP code 78548 speak Spanish as a primary language.

Does ZIP code 78548 have a large retiree population?

45% of households in ZIP code 78548 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 78548 in?

ZIP code 78548 observes the CST timezone.