78387 ZIP Code — Sinton, TX

San Patricio County, Texas

ZIP code 78387 is located in Sinton, Texas, within San Patricio County. It covers approximately 172.16 square miles and serves a population of 9,148 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 361.

About ZIP code 78387

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $103,900. Owner-occupancy sits near the national average at 67%.

Median household income is $47,951. Poverty affects 29% of residents, above the national average. SNAP benefit usage at 29% of households reflects economic stress in the area. 33% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 27 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 obesity (47%), diabetes (18%), smoking (23%) compared to national benchmarks. 18% of residents lack health insurance, above the national average.

Overall, ZIP code 78387 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.

9,148

population

172.16

sq mi land

Standard

ZIP type

Central (CT)

timezone

78387 ZIP code map

Cities in ZIP code 78387

Below are the cities the US Postal Service accepts for ZIP code 78387. Using any city not on this list may result in mail delivery delays.

City	Status
Sinton	Acceptable
Sinton	Preferred

Nearby ZIP codes

78370 Odem (10.4 mi) 78390 Taft (11.3 mi) 78368 Mathis (14.3 mi) 78389 Skidmore (14.5 mi) 78410 Corpus Christi (15.2 mi) 78409 Corpus Christi (16 mi) 78391 Tynan (16 mi) 78374 Portland (16.4 mi) 78393 Woodsboro (16.5 mi) 78402 Corpus Christi (17.4 mi) 78407 Corpus Christi (17.8 mi) 78408 Corpus Christi (18.6 mi)

Demographics updated 07/2026

Population
Total population	9,148
Population density	53 / sq mi
State FIPS	48
County FIPS	409

Geography
Land area	172.16 sq mi
Water area	0.42 sq mi
Latitude	28.0524
Longitude	-97.5399
Timezone	Central (CT)
Area code	361

Total population by age

Gender

Race & ethnicity

Economics updated 07/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	50.8%	46.9%	39.5%
$50k – $100k	26.1%	28.6%	30.1%
$100k – $200k	20.4%	20.1%	22.6%
Over $200k	2.7%	4.4%	7.8%

Demographics & statistics

9,148

Population

People per sq mi

35.9

Median age

$47,951

Median household income

$23,313

Per capita income

$103,900

Median home value

$572

Median monthly rent

66.5%

Home ownership

29.4%

Poverty rate

6.4%

Unemployment

2,694

Housing units

11.5%

Bachelor's or higher

Age distribution

Male Female

362

Under 5

367

372

5–9

376

362

10–14

366

265

15–19

268

310

20–24

313

508

25–34

514

630

35–44

637

540

45–54

547

360

55–59

365

187

60–64

190

339

65–74

343

269

75–84

271

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	2,379	26.0%
18 and over	6,769	74.0%
65 and over	1,309	14.3%
Median age	35.9 years

Race & ethnicity

White 50.3%

Hispanic or Latino 23.9%

Two or more races 19.1%

Other race 5.4%

Black or African American 1.1%

Asian 0.2%

American Indian / Alaska Native 0.2%

Group	Count	%
White	6,038	50.3%
Hispanic or Latino	2,867	23.9%
Two or more races	2,291	19.1%
Other race	644	5.4%
Black or African American	132	1.1%
Asian	24	0.2%
American Indian / Alaska Native	19	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	50.8%	46.9%	39.5%
$50k – $100k	26.1%	28.6%	30.1%
$100k – $200k	20.4%	20.1%	22.6%
Over $200k	2.7%	4.4%	7.8%

Under $10k 13.9%

$10k–$15k 11.1%

$15k–$25k 7.8%

$25k–$35k 7.1%

$35k–$50k 12.8%

$50k–$75k 13.5%

$75k–$100k 10.9%

$100k–$150k 13.4%

$150k–$200k 5.1%

$200k+ 4.3%

Range	% of households
Under $10k	13.9%
$10k–$15k	11.1%
$15k–$25k	7.8%
$25k–$35k	7.1%
$35k–$50k	12.8%
$50k–$75k	13.5%
$75k–$100k	10.9%
$100k–$150k	13.4%
$150k–$200k	5.1%
$200k+	4.3%
Median income	$47,951

Housing

Home values

Under $50k 26.3%

$50k–$100k 21.9%

$100k–$150k 16.7%

$150k–$200k 10.0%

$200k–$300k 11.2%

$300k–$500k 13.2%

$500k–$1M 0.7%

Housing overview

Metric	Value
Median home value	$103,900
Median rent / month	$572
Owner occupied	66.5%
Renter occupied	33.5%
Vacant	19.4%
Single-family detached	65.9%
Large apartment buildings	0.9%
Mobile homes	18.0%
Median rooms	5.1
Avg household size (owned)	3.23

Year built

Era	%
2020 or later	0.0%
2010–2019	6.7%
2000–2009	13.3%
1990–1999	8.3%
1980–1989	14.2%
1970–1979	16.5%
1960–1969	7.6%
1950–1959	15.6%
1940–1949	13.4%
1939 or earlier	4.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.2%
1 bedroom	12.2%
2 bedrooms	29.2%
3 bedrooms	43.4%
4 bedrooms	14.7%
5+ bedrooms	0.4%

Vehicles per household

Vehicles	% of households
No vehicle	7.4%
1 vehicle	34.5%
2 vehicles	36.5%
3 or more	21.6%

Heating fuel

Fuel type	%
Utility gas	20.5%
Electricity	73.5%
Propane / LP gas	5.9%

Households & families

Household type	Count	%
Married-couple family	1,340	45.0%
Cohabiting couple	197	6.6%
Male householder, no spouse	322	10.8%
Female householder, no spouse	1,116	37.5%
Households with children under 18	1,258	42.3%
Households with seniors (65+)	975	32.8%
Average household size	2.98

Marital status

Status	Male	Female
Never married	42.0%	36.3%
Married	44.9%	43.6%
Separated	3.3%	1.7%
Widowed	1.1%	8.8%
Divorced	8.7%	9.7%

Education

Less than 9th grade 11.4%

Some HS, no diploma 10.5%

HS graduate 36.0%

Some college, no degree 20.2%

Associate's degree 10.4%

Bachelor's degree 5.3%

Graduate / professional 6.3%

Metric	%
HS diploma or higher	78.1%
Bachelor's or higher	11.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	219	9.2%
Kindergarten	108	4.5%
Elementary school	1,205	50.8%
High school	409	17.2%
College / grad school	433	18.2%

Employment

Industry of employment

Education & healthcare 19.9%

Construction 15.4%

Retail trade 12.7%

Arts, food & hospitality 11.5%

Agriculture & mining 10.4%

Transportation & utilities 9.1%

Manufacturing 7.8%

Public administration 4.5%

Other services 3.4%

Professional & management 3.0%

Wholesale trade 1.6%

Finance & real estate 0.8%

Occupation

Category	%
Management, business & arts	23.0%
Service	20.5%
Sales & office	14.1%
Natural resources & construction	21.1%
Production & transportation	21.4%

Employment type

Type	%
Private sector	83.7%
Government	11.3%
Self-employed	5.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	84.4%
Carpool	8.3%
Public transit	0.1%
Walk	1.0%
Work from home	4.9%
Other means	1.2%
Avg commute (minutes)	26.6

Poverty

All people 29.4%

Under 18 years 34.8%

18 and over 27.5%

Married-couple families 13.9%

Female-led households 41.6%

Income support

Source	% of households
Social Security	33.0%
Retirement income	21.9%
Supplemental Security	9.9%
Cash public assistance	2.0%
Food stamps / SNAP	28.9%

Health indicators

Condition	%
Obesity	46.9%
High blood pressure	38.7%
High cholesterol	36.1%
Diabetes	17.7%
Heart disease	7.9%
Stroke	3.9%
Asthma	9.7%
Arthritis	24.8%
Kidney disease	4.0%
Pulmonary disease	8.2%
Cancer	5.5%

Behavior / access	%
Smoking	23.0%
Binge drinking	15.5%
No physical activity	40.2%
Less than 7 hrs sleep	36.1%
Depression	22.4%
Fair or poor health	28.3%
Poor mental health	16.7%
Poor physical health	16.1%
No health insurance	42.0%
Visited doctor (checkup)	70.4%
Visited dentist	36.9%
Cholesterol screening	86.6%
Teeth loss	20.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	367	5.4%

Disability	%
Any disability	19.4%
Under 18	1.5%
18–64 years	15.9%
65 and over	66.6%

Health insurance coverage

Type	%
Private insurance	47.9%
Public insurance	43.2%
No insurance	17.8%
Uninsured under 19	2.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	8,419	92.0%
Spanish	640	7.6%
Other Indo-European	640	7.6%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	8,656	94.6%
Born in same state	8,632	94.4%
Born in different state	7,783	85.1%
Foreign born	24	0.3%
Naturalized citizen	492	5.4%
Not a US citizen	96	19.5%

Ancestry

Ancestry	Count	%
French	532	5.8%
Italian	188	2.1%
Arab	103	1.1%

Ancestry	Count	%
English	17	0.2%
Polish	3	0%

Technology access

Metric	% of households
Computer access	32.5%
Internet access	83.6%

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

Frequently asked questions about ZIP code 78387

What city is ZIP code 78387 in?

ZIP code 78387 is primarily assigned to Sinton, Texas.

What county is ZIP code 78387 in?

ZIP code 78387 falls within San Patricio County, Texas.

What is the poverty rate in ZIP code 78387?

29% of residents in ZIP code 78387 live below the poverty line, above the national average.

How educated is the population of ZIP code 78387?

12% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What are the health statistics for ZIP code 78387?

Health data for ZIP code 78387 shows elevated rates of obesity (47%) and diabetes (18%) and smoking (23%) compared to national benchmarks.

What is the typical home value in ZIP code 78387?

The median home value in ZIP code 78387 is $103,900.

What timezone is ZIP code 78387 in?

ZIP code 78387 observes the CST timezone.