Residential delivery area · Texas
ZIP Code 78251: San Antonio, TX
ZIP code 78251 is in San Antonio, Texas, entirely in Bexar County (Census 2020 ZIP-county file). About 59,000 people live there (Census Bureau, ACS 2020-2024), the 5th most populous of San Antonio's 59 residential ZIP codes. Median household income is $78,958 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- San Antonio · 59 residential ZIPs
- County
- Bexar County
- Census places
- San Antonio
- Metro area
- San Antonio-New Braunfels, TX
- House districts
- TX-20 (97%), TX-23 (3%) 119th Congress, by share of land
- State
- Texas
- Time zone
- Central
- Land area
- 15.0 sq mi · 3,967 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 78251?
78251 centers on 29.462°, -98.677° and covers 15.0 square miles of land plus 0.0 of water. It borders 4 ZIP codes: 78250, 78238, 78245, 78253.
The map draws ZIP code areas only. For the streets inside 78251, 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 78251 compare with the rest of San Antonio?
| Measure | 78251 | In San Antonio | In Bexar County | In TX |
|---|---|---|---|---|
| People (ACS 2020-2024) | 59,435 | 5th of 59 | 6th of 78 | 79th of 1,990 |
| Median household income | $79k | 21st of 50 | 29th of 65 | 468th of 1,172 |
| Median home value | $268k | 21st of 54 | 28th of 67 | 458th of 1,172 |
Its median household income is higher than in 61% of U.S. residential ZIP codes, and it is denser than 92% 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 78251?
The 2020 Census counted 58,836 people in 78251; the ACS, which samples households over 2020-2024, estimates 59,435. Between the 2010 and 2020 censuses its population grew 19.0% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 59,435
- 2020 Census count
- 58,836+19.0% since 2010 (49,435)
- Households
- 22,275
- Median age
- 33.2
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 78251?
Of the 59,435 people the ACS estimates in 78251, 22.5% are under 18 and 8.7% are 65 or older. The largest group by race and Hispanic origin is Hispanic or Latino (61.9%), then White (not Hispanic) (21.6%).
- Under 1822.5%
- 18 to 6468.8%
- 65 and older8.7%
- Hispanic or Latino61.9%
- White, not Hispanic21.6%
- Black, not Hispanic10.0%
- Other or two or more3.9%
- Asian, not Hispanic2.7%
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 78251 earn?
Median household income is $78,958 (ACS 2020-2024), the 29th highest of the 65 ranked ZIP codes in Bexar County. It is not measurably different from 2015-2019 ($80,602 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $78,958
- Income per person
- $37,549
- Below the poverty line
- 8.7%
- Unemployed (of the labor force)
- 7.9%
- Adults 25+ with a bachelor's degree
- 33.8%
- Adjusted gross income per tax return, 2022
- $58,28326,810 returns; wages 83% 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 78251?
FHFA's house price index for 78251, built from repeat sales and appraisals of the same homes, rose 84% from 2015 to 2025 and rose 40% from 2020 to 2025, and moved −3.7% in 2025.
- Median home value (owners' estimate)
- $268,300
- Median gross rent
- $1,413
- Homes owned by their occupants
- 50.8%
- Housing units
- 23,491
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 78251?
968 business establishments had a location in this ZIP code in 2023, 197 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance208
- Accommodation and food services159
- Retail trade136
- Finance and insurance89
- Other services (except public administration)85
- Real estate and rental and leasing58
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 78251?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 78250 | San Antonio | 57,323 | $81k | 2.9 mi |
| 78238 | San Antonio | 26,032 | $58k | 3.6 mi |
| 78245 | San Antonio | 96,015 | $90k | 6.1 mi |
| 78253 | San Antonio | 69,282 | $106k | 6.7 mi |
| 78227 | San Antonio | 44,035 | $52k | 5.4 mi (near) |
| 78254 | San Antonio | 77,893 | $116k | 5.6 mi (near) |
| 78236 | Jbsa Lackland | 7,635 | $69k | 6.2 mi (near) |
| 78240 | San Antonio | 57,921 | $63k | 6.2 mi (near) |
| 78228 | San Antonio | 56,165 | $53k | 6.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.