78009 ZIP Code — Castroville, TX

Medina County, Texas

ZIP code 78009 is located in Castroville, Texas, within Medina County. It covers approximately 70.47 square miles and serves a population of 9,202 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 830.

About ZIP code 78009

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $320,000. Owner-occupancy is high at 84%, well above the national average.

Median household income is $98,732. 31% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with retail trade as the leading industry. The average commute of 30 minutes is near the national average.

Educational attainment is near the national average, with 31% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 16% of civilians, above the national average of 7%.

Overall, ZIP code 78009 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.

9,202

population

70.47

sq mi land

Standard

ZIP type

Central (CT)

timezone

78009 ZIP code map

Cities in ZIP code 78009

Below are the cities the US Postal Service accepts for ZIP code 78009. Using any city not on this list may result in mail delivery delays.

City	Status
Castroville	Preferred

Nearby ZIP codes

78039 La Coste (4.7 mi) 78066 Rio Medina (7.7 mi) 78253 San Antonio (9.4 mi) 78252 San Antonio (10.5 mi) 78245 San Antonio (10.8 mi) 78002 Atascosa (11.2 mi) 78016 Devine (11.3 mi) 78052 Lytle (11.4 mi) 78059 Natalia (11.9 mi) 78056 Mico (12.6 mi) 78251 San Antonio (15 mi) 78861 Hondo (15.6 mi)

Demographics updated 07/2026

Population
Total population	9,202
Population density	131 / sq mi
State FIPS	48
County FIPS	325

Geography
Land area	70.47 sq mi
Water area	0.33 sq mi
Latitude	29.3610
Longitude	-98.8877
Timezone	Central (CT)
Area code	830

Total population by age

Gender

Race & ethnicity

Economics updated 07/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	34.8%	38.5%	39.5%
$50k – $100k	40.4%	33.0%	30.1%
$100k – $200k	18.2%	23.4%	22.6%
Over $200k	6.7%	5.1%	7.8%

Demographics & statistics

9,202

Population

131

People per sq mi

42.3

Median age

$98,732

Median household income

$40,616

Per capita income

$320,000

Median home value

$1,221

Median monthly rent

84.4%

Home ownership

8.8%

Poverty rate

4.2%

Unemployment

3,049

Housing units

31.3%

Bachelor's or higher

Age distribution

Male Female

329

Under 5

290

302

5–9

265

239

10–14

211

262

15–19

230

429

20–24

377

560

25–34

493

418

35–44

367

760

45–54

668

513

55–59

451

305

60–64

269

438

65–74

386

280

75–84

247

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,980	21.5%
18 and over	7,222	78.5%
65 and over	1,464	15.9%
Median age	42.3 years

Race & ethnicity

White 45.2%

Hispanic or Latino 24.1%

Two or more races 20.1%

Other race 5.3%

Black or African American 3.3%

Asian 1.2%

American Indian / Alaska Native 0.8%

Group	Count	%
White	5,482	45.2%
Hispanic or Latino	2,929	24.1%
Two or more races	2,433	20.1%
Other race	642	5.3%
Black or African American	405	3.3%
Asian	145	1.2%
American Indian / Alaska Native	95	0.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	34.8%	38.5%	39.5%
$50k – $100k	40.4%	33.0%	30.1%
$100k – $200k	18.2%	23.4%	22.6%
Over $200k	6.7%	5.1%	7.8%

Under $10k 2.7%

$10k–$15k 0.8%

$15k–$25k 3.6%

$25k–$35k 5.3%

$35k–$50k 7.7%

$50k–$75k 15.5%

$75k–$100k 16.7%

$100k–$150k 23.6%

$150k–$200k 10.3%

$200k+ 13.8%

Range	% of households
Under $10k	2.7%
$10k–$15k	0.8%
$15k–$25k	3.6%
$25k–$35k	5.3%
$35k–$50k	7.7%
$50k–$75k	15.5%
$75k–$100k	16.7%
$100k–$150k	23.6%
$150k–$200k	10.3%
$200k+	13.8%
Median income	$98,732

Housing

Home values

Under $50k 4.0%

$50k–$100k 10.5%

$100k–$150k 10.8%

$150k–$200k 7.0%

$200k–$300k 14.9%

$300k–$500k 30.7%

$500k–$1M 19.9%

$1M+ 2.3%

Housing overview

Metric	Value
Median home value	$320,000
Median rent / month	$1,221
Owner occupied	84.4%
Renter occupied	15.6%
Vacant	12.2%
Single-family detached	67.7%
Large apartment buildings	0.4%
Mobile homes	24.9%
Median rooms	6.0
Avg household size (owned)	2.91

Year built

Era	%
2020 or later	0.0%
2010–2019	20.9%
2000–2009	22.8%
1990–1999	23.7%
1980–1989	10.8%
1970–1979	7.7%
1960–1969	5.1%
1950–1959	3.6%
1940–1949	1.2%
1939 or earlier	4.2%

Bedrooms

Size	% of units
No bedroom (studio)	1.4%
1 bedroom	1.8%
2 bedrooms	17.4%
3 bedrooms	51.2%
4 bedrooms	26.3%
5+ bedrooms	1.8%

Vehicles per household

Vehicles	% of households
No vehicle	2.9%
1 vehicle	18.4%
2 vehicles	39.7%
3 or more	39.0%

Heating fuel

Fuel type	%
Utility gas	28.8%
Electricity	65.4%
Propane / LP gas	4.8%
No fuel used	0.9%

Households & families

Household type	Count	%
Married-couple family	2,269	73.1%
Cohabiting couple	137	4.4%
Male householder, no spouse	199	6.4%
Female householder, no spouse	497	16.0%
Households with children under 18	1,028	33.1%
Households with seniors (65+)	1,004	32.4%
Average household size	2.93

Marital status

Status	Male	Female
Never married	25.9%	23.4%
Married	65.7%	59.1%
Separated	1.4%	0.7%
Widowed	1.2%	10.8%
Divorced	5.8%	5.9%

Education

Less than 9th grade 4.8%

Some HS, no diploma 5.0%

HS graduate 19.4%

Some college, no degree 26.4%

Associate's degree 13.0%

Bachelor's degree 18.3%

Graduate / professional 13.0%

Metric	%
HS diploma or higher	90.1%
Bachelor's or higher	31.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	140	6.9%
Kindergarten	74	3.6%
Elementary school	863	42.3%
High school	455	22.3%
College / grad school	510	25.0%

Employment

Industry of employment

Retail trade 19.7%

Education & healthcare 18.8%

Manufacturing 10.4%

Professional & management 8.8%

Construction 8.3%

Public administration 8.0%

Finance & real estate 6.2%

Other services 5.5%

Transportation & utilities 4.9%

Arts, food & hospitality 4.6%

Wholesale trade 3.8%

Agriculture & mining 0.8%

Information 0.3%

Occupation

Category	%
Management, business & arts	35.7%
Service	14.3%
Sales & office	22.7%
Natural resources & construction	11.5%
Production & transportation	15.8%

Employment type

Type	%
Private sector	73.1%
Government	21.9%
Self-employed	4.8%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	78.2%
Carpool	10.9%
Public transit	0.0%
Walk	2.5%
Work from home	7.9%
Other means	0.5%
Avg commute (minutes)	30.1

Poverty

All people 8.8%

Under 18 years 22.5%

18 and over 5.0%

Married-couple families 2.8%

Female-led households 31.2%

Income support

Source	% of households
Social Security	31.1%
Retirement income	34.5%
Supplemental Security	6.7%
Cash public assistance	0.7%
Food stamps / SNAP	3.4%

Health indicators

Condition	%
Obesity	39.1%
High blood pressure	34.9%
High cholesterol	36.3%
Diabetes	12.2%
Heart disease	6.5%
Stroke	2.9%
Asthma	8.8%
Arthritis	22.9%
Kidney disease	2.9%
Pulmonary disease	6.3%
Cancer	6.3%

Behavior / access	%
Smoking	16.2%
Binge drinking	18.1%
No physical activity	24.8%
Less than 7 hrs sleep	31.7%
Depression	21.6%
Fair or poor health	16.8%
Poor mental health	14.6%
Poor physical health	11.1%
No health insurance	26.4%
Visited doctor (checkup)	71.6%
Visited dentist	57.2%
Cholesterol screening	90.2%
Teeth loss	12.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,116	15.5%

Disability	%
Any disability	12.8%
Under 18	3.3%
18–64 years	13.1%
65 and over	25.5%

Health insurance coverage

Type	%
Private insurance	70.4%
Public insurance	33.4%
No insurance	13.0%
Uninsured under 19	12.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	8,583	93.3%
Spanish	660	7.7%
Other Indo-European	635	7.4%
Asian & Pacific Islander	14	0.2%
Other languages	11	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	8,373	91.0%
Born in same state	7,931	86.2%
Born in different state	5,754	62.5%
Foreign born	442	4.8%
Naturalized citizen	829	9.0%
Not a US citizen	404	48.7%

Ancestry

Ancestry	Count	%
Arab	951	10.3%
French	795	8.6%
Italian	544	5.9%
English	55	0.6%

Ancestry	Count	%
Polish	49	0.5%
Dutch	12	0.1%
German	9	0.1%

Technology access

Metric	% of households
Computer access	33.7%
Internet access	97.5%

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

Frequently asked questions about ZIP code 78009

What city is ZIP code 78009 in?

ZIP code 78009 is primarily assigned to Castroville, Texas.

What county is ZIP code 78009 in?

ZIP code 78009 falls within Medina County, Texas.

Is ZIP code 78009 mostly owner-occupied?

84% of occupied units in ZIP code 78009 are owner-occupied, well above the national average.

Does ZIP code 78009 have a large veteran population?

16% of civilians in ZIP code 78009 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 78009?

The median home value in ZIP code 78009 is $320,000.

What is the population of ZIP code 78009?

ZIP code 78009 has an estimated population of 9,202 residents, with a density of 131 people per square mile.

What timezone is ZIP code 78009 in?

ZIP code 78009 observes the CST timezone.