78203 ZIP Code — San Antonio, TX

Bexar County, Texas

ZIP code 78203 is located in San Antonio, Texas, within Bexar County. It covers approximately 1.37 square miles and serves a population of 5,174 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 210.

About ZIP code 78203

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $106,800. Owner-occupancy sits near the national average at 49%.

Median household income is $32,500. Poverty affects 33% of residents, above the national average. SNAP benefit usage at 35% of households reflects economic stress in the area.

The dominant occupation class is service, with education and healthcare as the leading industry. The average commute of 21 minutes is near the national average.

College attainment at 11% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of obesity (49%), diabetes (20%), smoking (23%) compared to national benchmarks. 27% of residents lack health insurance, above the national average.

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

Overall, ZIP code 78203 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, and elevated reliance on food assistance.

5,174

population

1.37

sq mi land

Standard

ZIP type

Central (CT)

timezone

78203 ZIP code map

Cities in ZIP code 78203

Below are the cities the US Postal Service accepts for ZIP code 78203. Using any city not on this list may result in mail delivery delays.

City	Status
San Antonio	Preferred

Nearby ZIP codes

78202 San Antonio (0.9 mi) 78210 San Antonio (1.3 mi) 78205 San Antonio (1.7 mi) 78208 San Antonio (1.8 mi) 78288 San Antonio (2 mi) 78289 San Antonio (2 mi) 78243 San Antonio (2 mi) 78285 San Antonio (2 mi) 78206 San Antonio (2.1 mi) 78215 San Antonio (2.2 mi) 78204 San Antonio (2.9 mi) 78234 Jbsa Ft Sam Houston (3.5 mi)

Demographics updated 06/2026

Population
Total population	5,174
Population density	3,777 / sq mi
State FIPS	48
County FIPS	029

Geography
Land area	1.37 sq mi
Water area	0.00 sq mi
Latitude	29.4153
Longitude	-98.4611
Timezone	Central (CT)
Area code	210

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	68.8%	43.3%	39.5%
$50k – $100k	23.8%	31.4%	30.1%
$100k – $200k	7.4%	19.9%	22.6%
Over $200k	0.0%	5.4%	7.8%

Demographics & statistics

5,174

Population

3,777

People per sq mi

36.5

Median age

$32,500

Median household income

$17,849

Per capita income

$106,800

Median home value

$877

Median monthly rent

49.0%

Home ownership

33.4%

Poverty rate

8.7%

Unemployment

1,502

Housing units

11.2%

Bachelor's or higher

Age distribution

Male Female

157

Under 5

161

194

5–9

200

185

10–14

190

167

15–19

172

165

20–24

170

368

25–34

380

402

35–44

413

288

45–54

296

255

55–59

263

108

60–64

112

158

65–74

162

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,355	26.2%
18 and over	3,819	73.8%
65 and over	528	10.2%
Median age	36.5 years

Race & ethnicity

White 37.2%

Hispanic or Latino 26.8%

Two or more races 18.9%

Black or African American 8.4%

Other race 8.1%

American Indian / Alaska Native 0.3%

Asian 0.3%

Group	Count	%
White	2,630	37.2%
Hispanic or Latino	1,897	26.8%
Two or more races	1,335	18.9%
Black or African American	597	8.4%
Other race	570	8.1%
American Indian / Alaska Native	23	0.3%
Asian	19	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	68.8%	43.3%	39.5%
$50k – $100k	23.8%	31.4%	30.1%
$100k – $200k	7.4%	19.9%	22.6%
Over $200k	0.0%	5.4%	7.8%

Under $10k 17.6%

$10k–$15k 7.7%

$15k–$25k 12.9%

$25k–$35k 14.6%

$35k–$50k 19.2%

$50k–$75k 11.2%

$75k–$100k 8.1%

$100k–$150k 7.1%

$150k–$200k 0.2%

$200k+ 1.3%

Range	% of households
Under $10k	17.6%
$10k–$15k	7.7%
$15k–$25k	12.9%
$25k–$35k	14.6%
$35k–$50k	19.2%
$50k–$75k	11.2%
$75k–$100k	8.1%
$100k–$150k	7.1%
$150k–$200k	0.2%
$200k+	1.3%
Median income	$32,500

Housing

Home values

Under $50k 12.2%

$50k–$100k 34.2%

$100k–$150k 20.1%

$150k–$200k 8.2%

$200k–$300k 13.1%

$300k–$500k 12.1%

Housing overview

Metric	Value
Median home value	$106,800
Median rent / month	$877
Owner occupied	49.0%
Renter occupied	51.0%
Vacant	18.3%
Single-family detached	76.0%
Large apartment buildings	2.9%
Mobile homes	0.7%
Median rooms	4.9
Avg household size (owned)	3.11

Year built

Era	%
2020 or later	0.8%
2010–2019	1.4%
2000–2009	10.6%
1990–1999	7.3%
1980–1989	10.3%
1970–1979	5.3%
1960–1969	6.8%
1950–1959	12.2%
1940–1949	11.5%
1939 or earlier	33.7%

Bedrooms

Size	% of units
No bedroom (studio)	5.7%
1 bedroom	15.7%
2 bedrooms	30.0%
3 bedrooms	40.2%
4 bedrooms	7.9%
5+ bedrooms	0.6%

Vehicles per household

Vehicles	% of households
No vehicle	16.6%
1 vehicle	38.2%
2 vehicles	26.8%
3 or more	18.5%

Heating fuel

Fuel type	%
Utility gas	38.7%
Electricity	59.9%
Propane / LP gas	0.4%
No fuel used	1.0%

Households & families

Household type	Count	%
Married-couple family	689	32.8%
Cohabiting couple	45	2.1%
Male householder, no spouse	660	31.4%
Female householder, no spouse	708	33.7%
Households with children under 18	659	31.4%
Households with seniors (65+)	355	16.9%
Average household size	2.41

Marital status

Status	Male	Female
Never married	38.9%	33.7%
Married	41.9%	37.4%
Separated	6.1%	9.7%
Widowed	1.5%	7.9%
Divorced	11.7%	11.2%

Education

Less than 9th grade 19.0%

Some HS, no diploma 7.8%

HS graduate 34.1%

Some college, no degree 22.5%

Associate's degree 5.5%

Bachelor's degree 6.0%

Graduate / professional 5.2%

Metric	%
HS diploma or higher	73.2%
Bachelor's or higher	11.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	40	3.1%
Kindergarten	94	7.3%
Elementary school	663	51.4%
High school	181	14.0%
College / grad school	313	24.2%

Employment

Industry of employment

Education & healthcare 18.1%

Arts, food & hospitality 14.5%

Construction 13.7%

Other services 12.5%

Manufacturing 11.0%

Professional & management 10.1%

Finance & real estate 8.8%

Retail trade 5.6%

Transportation & utilities 1.8%

Information 1.3%

Agriculture & mining 1.1%

Public administration 1.1%

Wholesale trade 0.4%

Occupation

Category	%
Management, business & arts	22.9%
Service	31.4%
Sales & office	14.1%
Natural resources & construction	18.5%
Production & transportation	13.1%

Employment type

Type	%
Private sector	74.5%
Government	12.8%
Self-employed	9.6%
Unpaid family workers	3.0%

Commute

Method	%
Drive alone	72.1%
Carpool	8.8%
Public transit	9.2%
Walk	2.8%
Work from home	5.1%
Other means	2.0%
Avg commute (minutes)	20.6

Poverty

All people 33.4%

Under 18 years 45.7%

18 and over 29.1%

Married-couple families 8.0%

Female-led households 58.8%

Income support

Source	% of households
Social Security	17.8%
Retirement income	7.4%
Supplemental Security	4.6%
Cash public assistance	4.4%
Food stamps / SNAP	35.0%

Health indicators

Condition	%
Obesity	49.0%
High blood pressure	41.8%
High cholesterol	32.6%
Diabetes	19.8%
Heart disease	8.0%
Stroke	4.8%
Asthma	11.0%
Arthritis	24.1%
Kidney disease	4.4%
Pulmonary disease	8.3%
Cancer	4.5%

Behavior / access	%
Smoking	22.8%
Binge drinking	14.7%
No physical activity	37.8%
Less than 7 hrs sleep	41.7%
Depression	22.5%
Fair or poor health	33.6%
Poor mental health	18.7%
Poor physical health	17.1%
No health insurance	46.3%
Visited doctor (checkup)	72.5%
Visited dentist	36.4%
Cholesterol screening	84.5%
Teeth loss	30.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	288	7.6%

Disability	%
Any disability	14.7%
Under 18	0.4%
18–64 years	15.1%
65 and over	48.3%

Health insurance coverage

Type	%
Private insurance	37.7%
Public insurance	40.8%
No insurance	27.0%
Uninsured under 19	6.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,856	93.9%
Spanish	1,122	23.1%
Other Indo-European	1,119	23.0%
Asian & Pacific Islander	3	0.1%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,019	77.7%
Born in same state	3,921	75.8%
Born in different state	3,581	69.2%
Foreign born	98	1.9%
Naturalized citizen	1,155	22.3%
Not a US citizen	169	14.6%

Ancestry

Ancestry	Count	%
Arab	376	7.3%
French	79	1.5%

Ancestry	Count	%
Polish	50	1%
Italian	26	0.5%

Technology access

Metric	% of households
Computer access	40.6%
Internet access	83.2%

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

Frequently asked questions about ZIP code 78203

What city is ZIP code 78203 in?

ZIP code 78203 is primarily assigned to San Antonio, Texas.

What county is ZIP code 78203 in?

ZIP code 78203 falls within Bexar County, Texas.

What is the poverty rate in ZIP code 78203?

33% of residents in ZIP code 78203 live below the poverty line, above the national average.

Is Spanish widely spoken in ZIP code 78203?

Approximately 23% of households in ZIP code 78203 speak Spanish as a primary language.

How educated is the population of ZIP code 78203?

11% 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 78203?

Health data for ZIP code 78203 shows elevated rates of obesity (49%) and diabetes (20%) and smoking (23%) compared to national benchmarks.

What timezone is ZIP code 78203 in?

ZIP code 78203 observes the CST timezone.