Residential delivery area · Texas
ZIP Code 78255: San Antonio, TX
ZIP code 78255 uses the postal name San Antonio, Texas and lies entirely in Bexar County (Census 2020 ZIP-county file). About 17,000 people live there (Census Bureau, ACS 2020-2024), the 42nd most populous of San Antonio's 59 residential ZIP codes. Median household income is $157,428 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Cross Mountain (29%), San Antonio (20%) and Scenic Oaks (11%); 41% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- San Antonio · 59 residential ZIPs
- County
- Bexar County
- Census places
- Cross Mountain (29%) census-designated place; San Antonio (20%); Scenic Oaks (11%) census-designated place
- Metro area
- San Antonio-New Braunfels, TX
- House district
- TX-23 119th Congress
- State
- Texas
- Time zone
- Central
- Land area
- 17.9 sq mi · 968 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 78255?
78255 centers on 29.649°, -98.666° and covers 17.9 square miles of land plus 0.0 of water. It borders 5 ZIP codes: 78256, 78257, 78023, 78249, 78006.
The map draws ZIP code areas only. For the streets inside 78255, 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 78255 compare with the rest of San Antonio?
| Measure | 78255 | In San Antonio | In Bexar County | In TX |
|---|---|---|---|---|
| People (ACS 2020-2024) | 17,379 | 42nd of 59 | 49th of 78 | 636th of 1,990 |
| Median household income | $157k | 1st of 50 | 2nd of 65 | 33rd of 1,172 |
| Median home value | $531k | 4th of 54 | 5th of 67 | 89th of 1,172 |
Its median household income is higher than in 97% of U.S. residential ZIP codes, and it is denser than 78% 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 78255?
The 2020 Census counted 17,775 people in 78255; the ACS, which samples households over 2020-2024, estimates 17,379. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 17,379
- 2020 Census count
- 17,775
- Households
- 6,106
- Median age
- 40.6
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 78255?
Of the 17,379 people the ACS estimates in 78255, 26.0% are under 18 and 13.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (47.6%), then Hispanic or Latino (36.3%).
- Under 1826.0%
- 18 to 6460.7%
- 65 and older13.3%
- White, not Hispanic47.6%
- Hispanic or Latino36.3%
- Asian, not Hispanic10.5%
- Other or two or more3.7%
- Black, not Hispanic1.9%
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 78255 earn?
Median household income is $157,428 (ACS 2020-2024), the 2nd highest of the 65 ranked ZIP codes in Bexar County.
- Median household income
- $157,428±$21,607
- Income per person
- $71,506
- Below the poverty line
- 5.9%
- Unemployed (of the labor force)
- 4.2%
- Adults 25+ with a bachelor's degree
- 63.2%
- Adjusted gross income per tax return, 2022
- $188,8508,370 returns; wages 61% 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 78255?
FHFA's house price index for 78255, built from repeat sales and appraisals of the same homes, rose 103% from 2015 to 2025 and rose 68% from 2020 to 2025, and moved +6.2% in 2025.
- Median home value (owners' estimate)
- $531,400
- Median gross rent
- $1,815
- Homes owned by their occupants
- 84.8%
- Housing units
- 6,270
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 78255?
330 business establishments had a location in this ZIP code in 2023, 94 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services71
- Health care and social assistance54
- Real estate and rental and leasing33
- Construction31
- Accommodation and food services27
- Other services (except public administration)23
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 78255?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 78256 | San Antonio | 13,453 | $75k | 3.0 mi |
| 78257 | San Antonio | 10,992 | $81k | 5.1 mi |
| 78023 | Helotes | 28,462 | $134k | 5.7 mi |
| 78249 | San Antonio | 63,439 | $81k | 6.5 mi |
| 78006 | Boerne | 44,560 | $116k | 14.6 mi |
| 78015 | Boerne | 24,867 | $163k | 6.5 mi (near) |
| 78231 | San Antonio | 9,744 | $109k | 8.8 mi (near) |
| 78254 | San Antonio | 77,893 | $116k | 9.0 mi (near) |
| 78240 | San Antonio | 57,921 | $63k | 9.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.