Get API Key →
US ZIP Code Profile

ZIP Code 78255
San Antonio, Texas

ZIP code 78255 is in San Antonio, located in Bexar County, Texas, within the San Antonio-New Braunfels metro area. Its 2020 Census population was 17,775. The estimated median adjusted gross income per tax return is $97,283, and about 25% of filers report $200,000 or more.

2020 Population
17,775
Census ZCTA
County
Bexar
FIPS 48029
Median income (est.)
$97,283
IRS SOI 2022
Land Area
18.257 mi²
+ 0.022 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
Coordinates29.649164, -98.66634
Land / Water Area18.257 mi² land · 0.022 mi² water

02Income & Economics

Distribution of the 8,370 individual tax returns filed in 78255 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
19.6%
$25K–$50K
12.7%
$50K–$75K
10.4%
$75K–$100K
8.2%
$100K–$200K
24.1%
$200K+
25.0%
The $200,000+ bracket accounts for 71% of 78255's total adjusted gross income, from 25% of returns — a concentration that drives the gap between the median ($97,283) 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 78255's IRS income metrics, 2020–2022.

Median income (2021→2022)
$97,283
▲ 1.1%
Filers earning $200K+
25.0%
▲ 1.7 pt
Total filers
8,370
▲ 4.4%
GET /zipc/v2/zipcodes/78255/soi?year=… $89K 2020 $96K 2021 $97K 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 78255 ZCTA.

2000
3,293
 
2010
10,826
▲ +228.8%
2020
17,775
▲ +64.2%

05USPS 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 AliasesSan Antonio

06Frequently Asked Questions

What county is ZIP code 78255 in?

ZIP code 78255 is in Bexar County, Texas (county FIPS code 48029).

What city is ZIP code 78255?

The primary USPS city for 78255 is San Antonio, TX.

What metro area (MSA) is 78255 in?

78255 is part of the San Antonio-New Braunfels, TX Metro Area (MSA code 41700).

What is the population of ZIP code 78255?

The 2020 Census population of 78255 was 17,775 residents.

What is the median income in ZIP code 78255?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78255 is about $97,283, with around 25% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.