Residential delivery area · Texas
ZIP Code 78721: Austin, TX
ZIP code 78721 is in Austin, Texas, entirely in Travis County (Census 2020 ZIP-county file). About 11,000 people live there (Census Bureau, ACS 2020-2024), the 35th most populous of Austin's 44 residential ZIP codes. Median household income is $84,573 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Austin · 44 residential ZIPs
- County
- Travis County
- Census places
- Austin
- Neighborhoods
- Johnston Terrace, Mlk, Mlk-183 GeoNames
- Metro area
- Austin-Round Rock-San Marcos, TX
- House district
- TX-35 119th Congress
- State
- Texas
- Time zone
- Central
- Land area
- 3.6 sq mi · 3,082 people per sq mi
- PO Box ZIPs
- 30 more ZIP codes use the name Austin for PO boxes or single organizations
Where is ZIP code 78721?
78721 centers on 30.271°, -97.683° and covers 3.6 square miles of land. It borders 3 ZIP codes: 78702, 78723, 78725.
The map draws ZIP code areas only. For the streets inside 78721, 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); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 78721 compare with the rest of Austin?
| Measure | 78721 | In Austin | In Travis County | In TX |
|---|---|---|---|---|
| People (ACS 2020-2024) | 10,997 | 35th of 44 | 48th of 60 | 786th of 1,990 |
| Median household income | $85k | not ranked | not ranked | not ranked |
| Median home value | $523k | 28th of 41 | 30th of 56 | 93rd of 1,172 |
78721's median household income is not ranked: its 90% margin of error (±$23,003) is more than a quarter of the figure ($84,573). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 89% of 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 78721?
The 2020 Census counted 11,316 people in 78721; the ACS, which samples households over 2020-2024, estimates 10,997. Between the 2010 and 2020 censuses its population fell 1.0% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 10,997
- 2020 Census count
- 11,316−1.0% since 2010 (11,425)
- Households
- 4,973
- Median age
- 33.8
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 78721?
Of the 10,997 people the ACS estimates in 78721, 20.8% are under 18 and 8.6% are 65 or older. The largest group by race and Hispanic origin is Hispanic or Latino (38.8%), then White (not Hispanic) (33.9%).
- Under 1820.8%
- 18 to 6470.5%
- 65 and older8.6%
- Hispanic or Latino38.8%
- White, not Hispanic33.9%
- Black, not Hispanic17.4%
- Other or two or more6.9%
- 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 78721 earn?
Median household income is $84,573 (ACS 2020-2024). It rose from $57,167 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $84,573±$23,003
- Income per person
- $57,366
- Below the poverty line
- 25.8%
- Unemployed (of the labor force)
- 6.8%
- Adults 25+ with a bachelor's degree
- 51.6%
- Adjusted gross income per tax return, 2022
- $90,2975,880 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 78721?
FHFA's house price index for 78721, built from repeat sales and appraisals of the same homes, rose 90% from 2015 to 2025 and rose 25% from 2020 to 2025, and moved −7.5% in 2025.
- Median home value (owners' estimate)
- $523,000
- Median gross rent
- $1,482
- Homes owned by their occupants
- 51.3%
- Housing units
- 5,341
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 78721?
310 business establishments had a location in this ZIP code in 2023, 113 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services46
- Other services (except public administration)36
- Health care and social assistance35
- Retail trade30
- Construction24
- Accommodation and food services22
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 78721?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 78702 | Austin | 25,985 | $102k | 1.9 mi |
| 78723 | Austin | 38,129 | $100k | 2.3 mi |
| 78725 | Austin | 10,746 | $106k | 5.3 mi |
| 78722 | Austin | 6,767 | $105k | 2.3 mi (near) |
| 78742 | Austin | 847 | – | 2.5 mi (near) |
| 78712 | Austin | 201 | – | 3.1 mi (near) |
| 78741 | Austin | 45,951 | $67k | 3.4 mi (near) |
| 78701 | Austin | 11,824 | $162k | 3.5 mi (near) |
| 78751 | Austin | 16,961 | $81k | 3.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.