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US ZIP Code Profile

ZIP Code 78233
San Antonio, Texas

ZIP code 78233 is in San Antonio, located in Bexar County, Texas, within the San Antonio-New Braunfels metro area. Its 2020 Census population was 49,442. The estimated median adjusted gross income per tax return is $41,403, and about 1% of filers report $200,000 or more.

2020 Population
49,442
Census ZCTA
County
Bexar
FIPS 48029
Median income (est.)
$41,403
IRS SOI 2022
Land Area
13.143 mi²
+ 0.088 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CitySan Antonio, TX
CountyBexar County (FIPS 48029)
StateTexas (FIPS 48)
Metro Area (MSA)San Antonio-New Braunfels, TX Metro Area (41700)
Census Region / DivisionSouth Region · West South Central Division
Coordinates29.555819, -98.36191
Land / Water Area13.143 mi² land · 0.088 mi² water

02Income & Economics

Distribution of the 23,450 individual tax returns filed in 78233 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
30.1%
$25K–$50K
30.3%
$50K–$75K
18.0%
$75K–$100K
9.6%
$100K–$200K
10.6%
$200K+
1.3%
The $200,000+ bracket accounts for 9% of 78233's total adjusted gross income, from 1% of returns — a concentration that drives the gap between the median ($41,403) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 78233's IRS income metrics, 2020–2022.

Median income (2021→2022)
$41,403
▲ 6.9%
Filers earning $200K+
1.3%
▲ 0.3 pt
Total filers
23,450
▼ 0.5%
GET /zipc/v2/zipcodes/78233/soi?year=… $37K 2020 $39K 2021 $41K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 78233 ZCTA.

2000
36,065
 
2010
43,710
▲ +21.2%
2020
49,442
▲ +13.1%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 78233. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 78233

San Antonio and its immediate neighbors, sorted by distance.

3 mi
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Distance from 78233 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number487980
City AliasesLive Oak, San Antonio

07Frequently Asked Questions

What county is ZIP code 78233 in?

ZIP code 78233 is in Bexar County, Texas (county FIPS code 48029).

What city is ZIP code 78233?

The primary USPS city for 78233 is San Antonio, TX.

What metro area (MSA) is 78233 in?

78233 is part of the San Antonio-New Braunfels, TX Metro Area (MSA code 41700).

What is the population of ZIP code 78233?

The 2020 Census population of 78233 was 49,442 residents.

What is the median income in ZIP code 78233?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78233 is about $41,403, with around 1% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.