Castroville ZIP Code List — Medina County, TX

There is one unique ZIP code in Castroville, Texas and it is 78009. Area code: 830.

ZIP codes

70.47

sq mi land

0.33

sq mi water

830

area code

Castroville, TX ZIP code map

About Castroville, TX

Castroville, Texas is a charming city located in the heart of Medina County. Known for its rich cultural history and scenic landscapes, it offers a picturesque setting for both residents and visitors. As the only city in its ZIP code of 78009, Castroville presents a unique blend of small-town charm and Texan hospitality.

Location & geography

Nestled approximately 20 miles west of San Antonio, Castroville is easily accessible via State Highway 90. The city features a land area of 70.47 square miles, making it a spacious locale for outdoor activities and exploration. Additionally, it boasts a small water area of 0.33 square miles, contributing to its serene environment.

Community & economy

Castroville is known for its strong community spirit, where local events and festivals draw residents together. The economy is primarily supported by agriculture and tourism, with many visitors attracted by the city’s historical sites and natural beauty. Daily life in Castroville reflects a harmonious blend of cultural traditions and modern conveniences.

Transportation

State Highway 90 serves as the main thoroughfare connecting Castroville to nearby cities and amenities. The closest major airport is San Antonio International Airport, located about 25 miles to the east, providing convenient access for air travel. Local transit options are limited, emphasizing the car-dependent nature of the community.

History

Founded in the mid-19th century by settlers from Alsace, France, Castroville has a rich heritage that reflects the diversity of its origins. The city was initially established as an agricultural hub, and its historical architecture continues to attract visitors today. Notable events in Castroville's history include its designation as a Texas Historic Landmark, highlighting its cultural significance.

Did you know?

One surprising fact about Castroville is that it is known as the 'Little Alsace of Texas' due to its French heritage. Additionally, the city hosts the annual Castroville Arts and Crafts Festival, showcasing local artisans and craftspeople.

ZIP codes for Castroville, TX (1)

ZIP code	City	County	Map
78009	Castroville	Medina	View map

Demographics & statistics

9,202

Population

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

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%
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	%
High blood pressure	34.9%
High cholesterol	36.3%
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	%
Binge drinking	18.1%
No physical activity	24.8%
Less than 7 hrs sleep	31.7%
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%
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

What is the ZIP code for Castroville, TX?

Castroville, TX has one ZIP code: 78009.

What is the main ZIP code for Castroville, TX?

The primary ZIP code for Castroville, TX is 78009. The city uses area code 830 for phone service.

What county is Castroville, TX in?

Castroville is located in Medina County, Texas.

How many ZIP codes are in Castroville, TX?

Castroville, TX has 1 ZIP code.

What ZIP code should I use when mailing something to the Castroville Town Square and historic downtown area?

The Castroville downtown area, including the historic town square and main commercial district, is located in ZIP code 78009.

What is the ZIP code for the Castroville Regional Utilities office and City Hall in Medina County?

City Hall and municipal offices in Castroville are located in ZIP code 78009, which serves the entire city.