Residential delivery area · Texas
ZIP Code 78729: Austin, TX
ZIP code 78729 is in Austin, Texas, mostly in Williamson County (88% of its land) with the rest in Travis County (Census 2020 ZIP-county file). About 30,000 people live there (Census Bureau, ACS 2020-2024), the 16th most populous of Austin's 44 residential ZIP codes. Median household income is $86,438 (Census Bureau, ACS 2020-2024). By Census place, 73% of its land lies in Austin; 27% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Austin · 44 residential ZIPs
- County
- Williamson County (88%); Travis County (12%)
- Census places
- Austin
- Neighborhoods
- Jollyville, Pond Springs GeoNames
- Metro area
- Austin-Round Rock-San Marcos, TX
- House district
- TX-37 119th Congress
- State
- Texas
- Time zone
- Central
- Land area
- 9.8 sq mi · 3,104 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 78729?
78729 centers on 30.457°, -97.756° and covers 9.8 square miles of land plus 0.1 of water. It borders 5 ZIP codes: 78750, 78717, 78727, 78759, 78728.
The map draws ZIP code areas only. For the streets inside 78729, 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 78729 compare with the rest of Austin?
| Measure | 78729 | In Austin | In Williamson County | In TX |
|---|---|---|---|---|
| People (ACS 2020-2024) | 30,460 | 16th of 44 | 11th of 27 | 376th of 1,990 |
| Median household income | $86k | 29th of 39 | 18th of 22 | 355th of 1,172 |
| Median home value | $476k | 30th of 41 | 10th of 24 | 124th of 1,172 |
Its median household income is higher than in 70% of U.S. residential ZIP codes, and it is denser than 89% 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 78729?
The 2020 Census counted 31,829 people in 78729; the ACS, which samples households over 2020-2024, estimates 30,460. Between the 2010 and 2020 censuses its population grew 17.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 30,460
- 2020 Census count
- 31,829+17.4% since 2010 (27,108)
- Households
- 14,500
- Median age
- 34.9
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 78729?
Of the 30,460 people the ACS estimates in 78729, 18.7% are under 18 and 8.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (52.9%), then Hispanic or Latino (22.7%).
- Under 1818.7%
- 18 to 6472.4%
- 65 and older8.9%
- White, not Hispanic52.9%
- Hispanic or Latino22.7%
- Asian, not Hispanic10.5%
- Black, not Hispanic9.3%
- Other or two or more4.6%
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 78729 earn?
Median household income is $86,438 (ACS 2020-2024), the 18th highest of the 22 ranked ZIP codes in Williamson County. It fell from $99,070 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $86,438
- Income per person
- $56,393
- Below the poverty line
- 6.5%
- Unemployed (of the labor force)
- 3.6%
- Adults 25+ with a bachelor's degree
- 62.5%
- Adjusted gross income per tax return, 2022
- $88,71214,830 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 78729?
FHFA's house price index for 78729, built from repeat sales and appraisals of the same homes, rose 86% from 2015 to 2025 and rose 34% from 2020 to 2025, and moved +0.0% in 2025.
- Median home value (owners' estimate)
- $476,200
- Median gross rent
- $1,678
- Homes owned by their occupants
- 38.5%
- Housing units
- 15,466
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 78729?
595 business establishments had a location in this ZIP code in 2023, 44 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services97
- Health care and social assistance63
- Retail trade58
- Other services (except public administration)55
- Construction53
- Accommodation and food services50
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 78729?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 78750 | Austin | 29,277 | $122k | 2.1 mi |
| 78717 | Austin | 37,262 | $145k | 2.2 mi |
| 78727 | Austin | 29,958 | $110k | 3.0 mi |
| 78759 | Austin | 43,182 | $102k | 3.8 mi |
| 78728 | Austin | 26,777 | $75k | 4.2 mi |
| 78613 | Cedar Park | 89,956 | $126k | 5.1 mi (near) |
| 78726 | Austin | 14,506 | $91k | 5.3 mi (near) |
| 78758 | Austin | 49,617 | $74k | 5.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.