Residential delivery area · Texas
ZIP Code 78233: San Antonio, TX
ZIP code 78233 is in San Antonio, Texas, entirely in Bexar County (Census 2020 ZIP-county file). About 49,000 people live there (Census Bureau, ACS 2020-2024), the 13th most populous of San Antonio's 59 residential ZIP codes. Median household income is $76,421 (Census Bureau, ACS 2020-2024). By Census place, its land lies in San Antonio (66%) and Live Oak (33%), and 1% in smaller places.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- San Antonio · 59 residential ZIPs
- County
- Bexar County
- Census places
- San Antonio (66%); Live Oak (33%)
- Metro area
- San Antonio-New Braunfels, TX
- House districts
- TX-35 (48%), TX-21 (37%), TX-28 (15%) 119th Congress, by share of land
- State
- Texas
- Time zone
- Central
- Land area
- 13.7 sq mi · 3,578 people per sq mi
- PO Box ZIPs
- 24 more ZIP codes use the name San Antonio for PO boxes or single organizations
Where is ZIP code 78233?
78233 centers on 29.555°, -98.364° and covers 13.7 square miles of land plus 0.1 of water. It borders 8 ZIP codes: 78239, 78247, 78217, 78148, 78218, 78154, 78266, 78109.
The map draws ZIP code areas only. For the streets inside 78233, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 78233 compare with the rest of San Antonio?
| Measure | 78233 | In San Antonio | In Bexar County | In TX |
|---|---|---|---|---|
| People (ACS 2020-2024) | 48,911 | 13th of 59 | 15th of 78 | 153rd of 1,990 |
| Median household income | $76k | 22nd of 50 | 30th of 65 | 506th of 1,172 |
| Median home value | $221k | 30th of 54 | 39th of 67 | 660th of 1,172 |
Its median household income is higher than in 57% of U.S. residential ZIP codes, and it is denser than 91% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 78233?
The 2020 Census counted 49,442 people in 78233; the ACS, which samples households over 2020-2024, estimates 48,911. Between the 2010 and 2020 censuses its population grew 13.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 48,911
- 2020 Census count
- 49,442+13.1% since 2010 (43,710)
- Households
- 18,970
- Median age
- 36.0
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 78233?
Of the 48,911 people the ACS estimates in 78233, 22.9% are under 18 and 14.4% are 65 or older. The largest group by race and Hispanic origin is Hispanic or Latino (51.3%), then White (not Hispanic) (29.3%).
- Under 1822.9%
- 18 to 6462.7%
- 65 and older14.4%
- Hispanic or Latino51.3%
- White, not Hispanic29.3%
- Black, not Hispanic12.6%
- Other or two or more3.7%
- Asian, not Hispanic3.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 78233 earn?
Median household income is $76,421 (ACS 2020-2024), the 30th highest of the 65 ranked ZIP codes in Bexar County. It rose from $67,319 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $76,421
- Income per person
- $34,614
- Below the poverty line
- 10.4%
- Unemployed (of the labor force)
- 4.4%
- Adults 25+ with a bachelor's degree
- 27.5%
- Adjusted gross income per tax return, 2022
- $52,82223,450 returns; wages 78% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 78233?
FHFA's house price index for 78233, built from repeat sales and appraisals of the same homes, rose 82% from 2015 to 2025 and rose 32% from 2020 to 2025, and moved −4.5% in 2025.
- Median home value (owners' estimate)
- $220,800
- Median gross rent
- $1,514
- Homes owned by their occupants
- 60.4%
- Housing units
- 19,859
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 78233?
864 business establishments had a location in this ZIP code in 2023, 77 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance155
- Construction127
- Retail trade106
- Accommodation and food services92
- Other services (except public administration)74
- Administrative and support and waste management and remediation services70
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 78233?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 78239 | San Antonio | 28,609 | $70k | 2.7 mi |
| 78247 | San Antonio | 51,933 | $91k | 3.2 mi |
| 78217 | San Antonio | 34,055 | $61k | 3.5 mi |
| 78148 | Universal City | 22,187 | $75k | 4.1 mi |
| 78218 | San Antonio | 39,428 | $57k | 4.6 mi |
| 78154 | Schertz | 41,907 | $101k | 6.1 mi |
| 78266 | San Antonio | 7,338 | $147k | 6.8 mi |
| 78109 | Converse | 63,067 | $91k | 6.8 mi |
| 78150 | Jbsa Randolph | 0 | – | 5.1 mi (near) |
| 78244 | San Antonio | 38,092 | $71k | 5.4 mi (near) |
| 78259 | San Antonio | 29,826 | $114k | 5.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.