78066 ZIP Code — Rio Medina, TX

Medina County, Texas

ZIP code 78066 is located in Rio Medina, Texas, within Medina County. It covers approximately 22.23 square miles and serves a population of 707 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 830.

About ZIP code 78066

The housing stock consists of predominantly single-family detached homes. Much of the housing stock is relatively new, reflecting recent development activity. Median home value is $172,800. Owner-occupancy is high at 97%, well above the national average.

Median household income is $88,532. The poverty rate of 3% is below the national average.

The dominant occupation class is management, business, and professional, with construction as the leading industry.

Educational attainment is near the national average, with 26% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 28% of civilians, above the national average of 7%; and a significant foreign-born population at 27%; and disability rates above the national average at 56%.

Overall, ZIP code 78066 reflects a community defined by a strong veteran community, high homeownership, and a diverse immigrant population.

707

population

22.23

sq mi land

Standard

ZIP type

Central (CT)

timezone

78066 ZIP code map

Cities in ZIP code 78066

Below are the cities the US Postal Service accepts for ZIP code 78066. Using any city not on this list may result in mail delivery delays.

City	Status
Rio Medina	Preferred

Nearby ZIP codes

78056 Mico (5.2 mi) 78253 San Antonio (5.5 mi) 78009 Castroville (7.7 mi) 78245 San Antonio (11.1 mi) 78039 La Coste (11.3 mi) 78254 San Antonio (11.6 mi) 78251 San Antonio (13.2 mi) 78250 San Antonio (13.4 mi) 78023 Helotes (13.5 mi) 78252 San Antonio (13.8 mi) 78063 Pipe Creek (14.2 mi) 78002 Atascosa (16.5 mi)

Demographics updated 06/2026

Population
Total population	707
Population density	32 / sq mi
State FIPS	48
County FIPS	325

Geography
Land area	22.23 sq mi
Water area	0.05 sq mi
Latitude	29.4718
Longitude	-98.8877
Timezone	Central (CT)
Area code	830

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	17.4%	38.5%	39.5%
$50k – $100k	68.2%	33.0%	30.1%
$100k – $200k	4.2%	23.4%	22.6%
Over $200k	10.2%	5.1%	7.8%

Demographics & statistics

707

Population

People per sq mi

68.3

Median age

$88,532

Median household income

$42,724

Per capita income

$172,800

Median home value

Median monthly rent

96.6%

Home ownership

3.4%

Poverty rate

0.0%

Unemployment

344

Housing units

26.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

10–14

25–34

45–54

55–59

60–64

235

65–74

197

← Male

Female →

Age summary

Group	Count	%
Under 18	25	3.5%
18 and over	682	96.5%
65 and over	432	61.1%
Median age	68.3 years

Race & ethnicity

White 91.1%

Hispanic or Latino 4.5%

Two or more races 4.5%

Group	Count	%
White	674	91.1%
Hispanic or Latino	33	4.5%
Two or more races	33	4.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	17.4%	38.5%	39.5%
$50k – $100k	68.2%	33.0%	30.1%
$100k – $200k	4.2%	23.4%	22.6%
Over $200k	10.2%	5.1%	7.8%

$10k–$15k 3.7%

$15k–$25k 3.4%

$50k–$75k 6.2%

$75k–$100k 77.2%

$100k–$150k 7.9%

$150k–$200k 1.7%

Range	% of households
$10k–$15k	3.7%
$15k–$25k	3.4%
$50k–$75k	6.2%
$75k–$100k	77.2%
$100k–$150k	7.9%
$150k–$200k	1.7%
Median income	$88,532

Housing

Home values

$150k–$200k 58.4%

$200k–$300k 18.3%

$300k–$500k 23.3%

Housing overview

Metric	Value
Median home value	$172,800
Median rent / month	$0
Owner occupied	96.6%
Renter occupied	3.4%
Vacant	0.0%
Single-family detached	100.0%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	5.1
Avg household size (owned)	1.91

Year built

Era	%
2020 or later	0.0%
2010–2019	56.5%
2000–2009	2.2%
1990–1999	28.4%
1980–1989	6.5%
1970–1979	3.1%
1960–1969	0.0%
1950–1959	0.0%
1940–1949	3.4%
1939 or earlier	0.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	12.6%
3 bedrooms	83.4%
4 bedrooms	3.9%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	3.4%
2 vehicles	71.1%
3 or more	25.6%

Heating fuel

Fuel type	%
Electricity	75.3%
Propane / LP gas	21.1%
Wood	3.7%

Households & families

Household type	Count	%
Married-couple family	344	96.6%
Cohabiting couple	0	0.0%
Male householder, no spouse	0	0.0%
Female householder, no spouse	12	3.4%
Households with children under 18	12	3.4%
Households with seniors (65+)	233	65.4%
Average household size	1.99

Marital status

Status	Male	Female
Never married	3.1%	0.0%
Married	96.9%	96.3%
Separated	0.0%	0.0%
Widowed	0.0%	0.0%
Divorced	0.0%	3.7%

Education

Less than 9th grade 0.0%

Some HS, no diploma 0.0%

HS graduate 34.9%

Some college, no degree 10.0%

Associate's degree 29.2%

Bachelor's degree 15.8%

Graduate / professional 10.1%

Metric	%
HS diploma or higher	100.0%
Bachelor's or higher	26.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	12	100.0%
High school	0	0.0%
College / grad school	0	0.0%

Employment

Industry of employment

Construction 48.7%

Manufacturing 29.2%

Other services 11.5%

Transportation & utilities 10.6%

Occupation

Category	%
Management, business & arts	54.9%
Service	0.0%
Sales & office	5.3%
Natural resources & construction	0.0%
Production & transportation	39.8%

Employment type

Type	%
Private sector	100.0%
Government	0.0%
Self-employed	0.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	88.5%
Carpool	11.5%
Public transit	0.0%
Walk	0.0%
Work from home	0.0%
Other means	0.0%
Avg commute (minutes)	0.0

Poverty

All people 3.4%

Under 18 years 0.0%

18 and over 3.5%

Married-couple families 3.8%

Female-led households 0.0%

Income support

Source	% of households
Social Security	26.4%
Retirement income	75.8%
Supplemental Security	53.1%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	37.7%
High blood pressure	34.9%
High cholesterol	36.8%
Diabetes	11.3%
Heart disease	6.4%
Stroke	2.8%
Asthma	8.6%
Arthritis	23.2%
Kidney disease	2.8%
Pulmonary disease	6.3%
Cancer	6.5%

Behavior / access	%
Smoking	16.2%
Binge drinking	19.0%
No physical activity	22.7%
Less than 7 hrs sleep	31.4%
Depression	21.6%
Fair or poor health	15.3%
Poor mental health	14.2%
Poor physical health	10.7%
No health insurance	21.7%
Visited doctor (checkup)	71.5%
Visited dentist	59.6%
Cholesterol screening	91.0%
Teeth loss	12.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	189	27.7%

Disability	%
Any disability	55.7%
Under 18	0.0%
18–64 years	12.0%
65 and over	84.3%

Health insurance coverage

Type	%
Private insurance	98.3%
Public insurance	67.2%
No insurance	0.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	694	98.2%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	657	92.9%
Born in same state	468	66.2%
Born in different state	415	58.7%
Foreign born	189	26.7%
Naturalized citizen	50	7.1%
Not a US citizen	50	100.0%

Ancestry

Ancestry	Count	%
Italian	60	8.5%
Arab	55	7.8%

Ancestry	Count	%
French	20	2.8%

Technology access

Metric	% of households
Computer access	50.4%
Internet access	100.0%

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

Frequently asked questions about ZIP code 78066

What city is ZIP code 78066 in?

ZIP code 78066 is primarily assigned to Rio Medina, Texas.

What county is ZIP code 78066 in?

ZIP code 78066 falls within Medina County, Texas.

Does ZIP code 78066 have an older population?

61% of residents in ZIP code 78066 are 65 or older, above the national average of ~17%.

Is ZIP code 78066 mostly owner-occupied?

97% of occupied units in ZIP code 78066 are owner-occupied, well above the national average.

Does ZIP code 78066 have a large veteran population?

28% of civilians in ZIP code 78066 are veterans, above the national average of ~7%.

What share of ZIP code 78066 residents are foreign-born?

27% of residents in ZIP code 78066 are foreign-born, well above the national average of ~14%.

What timezone is ZIP code 78066 in?

ZIP code 78066 observes the CST timezone.