Postal Codes

78221 ZIP Code

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ZIP code 78221 covers San Antonio, Texas, with a population of about 41,580 and a median household income of $63,114.

Population
41,5801,145 per square mile
Median age
35.33.4 points below the US average
Median household income
$63,11417% below the Texas median
Poverty rate
17.2%4.8 points above the US average
Typical home value
$179,152down 8% in five years
Median rent
$1,14714% below the Texas median
Degree or higher
11.9%23.1 points below the US average
Homeownership
69.8%4.8 points above the US average
Time zone
Central UTC-06:00observes daylight saving time
Businesses
533

Where 78221 is

San Antonio, Texas — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population41,580
Median age35.3
Family households77.5%
Born outside the US15.6%
Speaks a language other than English at home54.9%
White (non-Hispanic)9%
Black (non-Hispanic)0.6%
Asian (non-Hispanic)0.4%
Hispanic or Latino88.9%
Veterans6.2%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$63,114
Income per person$23,114
Poverty rate17.2%
Households on SNAP or cash assistance21.1%

Household income distribution

Under $10k6.3%
$10–15k4.1%
$15–20k4.4%
$20–25k5.4%
$25–30k5.5%
$30–35k4.7%
$35–40k4.1%
$40–45k3.0%
$45–50k3.1%
$50–60k6.9%
$60–75k12.3%
$75–100k15.9%
$100–125k12.4%
$125–150k7.8%
$150–200k2.6%
$200k or more1.6%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed17,580
Mean adjusted gross income$42,217
Returns declaring $200,000 or more0.6%
Returns, under $25k38.3%
Returns, $25k–$50k33.0%
Returns, $50k–$75k14.9%
Returns, $75k–$100k6.8%
Returns, $100k–$200k6.3%
Returns, $200k or more0.6%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$157,500
Median gross rent$1,147
Rent as a share of household income35%
Owner-occupied69.8%
Vacant homes12.1%
Median year built1974

What the homes are

Detached house79.8%
Attached house1%
2 to 4 units4.2%
5 to 19 units6.5%
20 or more units4.3%
Mobile home3.9%
Boat, RV or van0.2%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$179,152as of 2026-07
Typical home value, 1 yeardown 4%
Typical home value, 5 yearsdown 8%
Typical home value, 10 yearsup 49.8%
Typical asking rent$1,355as of 2026-07
Typical asking rent, 1 yeardown 4.4%
Typical home value since 2000
200020132026$218,442$71,664

$72,659 in 2000 to $179,152 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate5.8%
Bachelor's degree or higher11.9%
High school diploma or higher74%
Works from home4.8%
Drives to work alone72.6%
Takes public transport2.2%
Commutes 45 minutes or more15.2%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity37.3% 3.9 pts above the national average of 33.4%
Diagnosed diabetes17.8% 5.8 pts above the national average of 12%
Currently smokes13.9% 0.7 pts above the national average of 13.2%
High blood pressure35.8% 1.7 pts above the national average of 34.1%
Fair or poor general health30.8% 10.5 pts above the national average of 20.3%
No health insurance (18–64)33.5% 22.2 pts above the national average of 11.3%
Depression21.4% 0.5 pts below the national average of 21.9%
No leisure-time physical activity39.8% 14.4 pts above the national average of 25.4%
Arthritis23.1% 2 pts below the national average of 25.1%
Binge drinking15.1% 0.9 pts below the national average of 16%
Taking blood pressure medication73.6% 1.1 pts below the national average of 74.7%
Cancer (non-skin)4.8% 2.9 pts below the national average of 7.7%
Current asthma8.8% 1.6 pts below the national average of 10.4%
Coronary heart disease6.5% same as the national average of 6.2%
Routine check-up in past year70.9% 5.8 pts below the national average of 76.7%
Cholesterol screening81.9% 4 pts below the national average of 85.9%
Cognitive disability18.7% 3.9 pts above the national average of 14.8%
Colorectal screening54.8% 9.5 pts below the national average of 64.3%
COPD5.7% 0.9 pts below the national average of 6.6%
Visited a dentist47.5% 13.8 pts below the national average of 61.3%
Any disability38.6% 7.9 pts above the national average of 30.7%
Hearing disability7.6% 0.9 pts above the national average of 6.7%
High cholesterol35.2% 1 pts below the national average of 36.2%
Independent living disability10.1% 1.7 pts above the national average of 8.4%
Mammography use70.4% 5.5 pts below the national average of 75.9%
Poor mental health (14+ days)17.4% 0.6 pts above the national average of 16.8%
Mobility disability19% 5 pts above the national average of 14%
Poor physical health (14+ days)17.2% 3.7 pts above the national average of 13.5%
Self-care disability5.8% 1.8 pts above the national average of 4%
Sleeps under 7 hours42.6% 6.2 pts above the national average of 36.4%
Stroke3.6% same as the national average of 3.4%
All natural teeth lost14.8% 1.8 pts above the national average of 13%
Vision disability9.8% 4.2 pts above the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments533
People employed24,527
Annual payroll$1,403,160,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 77.3% of US census tracts
FEMA ratingRelatively Low to Relatively High across the 15 census tracts this ZIP code covers
Expected annual loss65.9 out of 100
Community resilience20.6 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Hail97.7Very High at its worst in this ZIP code
Tornado95.9Very High at its worst in this ZIP code
Heat wave90Relatively High at its worst in this ZIP code
Wildfire82.6Relatively Moderate at its worst in this ZIP code
River flooding79.9Relatively High at its worst in this ZIP code
Drought68.4Relatively Low at its worst in this ZIP code
Hurricane55.9Relatively Low at its worst in this ZIP code
Landslide51.1Very Low at its worst in this ZIP code
Cold wave49.5Relatively Moderate at its worst in this ZIP code
Lightning45.4Relatively Moderate at its worst in this ZIP code
Winter weather40Relatively Low at its worst in this ZIP code
Strong wind31.2Relatively Low at its worst in this ZIP code
Ice storm22.3Very Low at its worst in this ZIP code
Earthquake9.6Very Low at its worst in this ZIP code
Compared with Texas and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPTexasUnited States
Median household income$63,114$76,292$78,538
Income per person$23,114$39,446$43,289
Poverty rate17.2%13.8%12.4%
Median home value$157,500$260,400$303,400
Median gross rent$1,147$1,339$1,348
Homeownership69.8%62.6%65%
Bachelor's degree or higher11.9%33.1%35%
Unemployment rate5.8%5.1%5.2%
Works from home4.8%12.8%13.5%
Born outside the US15.6%17.2%13.9%
Median age35.335.538.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationSAN ANTONIO STINSON AP, TX US3.4 km away
Rain in a year30 in

Average high and low by month

January64.7°F / 42.3°F1.79 in rain
February69.2°F / 46.8°F1.56 in rain
March75.3°F / 53.6°F2.43 in rain
April81.9°F / 60.3°F2.34 in rain
May88.1°F / 68.2°F3.88 in rain
June93.6°F / 74°F3.17 in rain
July96.2°F / 75.3°F1.78 in rain
August97.5°F / 75.6°F2.5 in rain
September91.3°F / 71.2°F3.15 in rain
October83.7°F / 61.8°F3.02 in rain
November73.3°F / 51.1°F2.01 in rain
December66.3°F / 43.9°F2.1 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarket48% of this ZIP code's area
Far from a supermarket48% of this ZIP code's area
No vehicle and far from a supermarket73% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 2 school districts, so the address decides which one, not the ZIP code.

Southside Independent School District81% of this ZIP code's land area
Harlandale Independent School District18.9% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability86more vulnerable than 86% of US census tracts
Socioeconomic status84more vulnerable than 84% of US census tracts
Household characteristics83more vulnerable than 83% of US census tracts
Racial and ethnic minority status90more vulnerable than 90% of US census tracts
Housing type and transport65more vulnerable than 65% of US census tracts
Walkability7.9 out of 20Below average
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

78224 San Antonio, TX3.4 km away
78214 San Antonio, TX3.9 km away
78211 San Antonio, TX6 km away
78235 San Antonio, TX6.5 km away
78225 San Antonio, TX6.6 km away
78223 San Antonio, TX7.4 km away
78226 San Antonio, TX8.2 km away
78204 San Antonio, TX8.3 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Bexar County100% of this ZIP code's land area
Time zoneCentral (UTC-06:00 standard)
Daylight saving timeObserved
Land area36.31 sq mi
Water area1.83 sq mi
Population density1,145 people per sq mi
Latitude, longitude29.3309, -98.5054

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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