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US ZIP Code Profile

ZIP Code 78724
Austin, Texas

ZIP code 78724 is in Austin, located in Travis County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 29,680. The estimated median adjusted gross income per tax return is $39,564, and about 3% of filers report $200,000 or more.

2020 Population
29,680
Census ZCTA
County
Travis
FIPS 48453
Median income (est.)
$39,564
IRS SOI 2022
Land Area
24.653 mi²
+ 2.038 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityAustin, TX
CountyTravis County (FIPS 48453)
StateTexas (FIPS 48)
Metro Area (MSA)Austin-Round Rock, TX Metro Area (12420)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.29271, -97.61794
Land / Water Area24.653 mi² land · 2.038 mi² water

02Income & Economics

Distribution of the 13,760 individual tax returns filed in 78724 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
32.0%
$25K–$50K
30.8%
$50K–$75K
16.1%
$75K–$100K
7.7%
$100K–$200K
10.0%
$200K+
3.3%
The $200,000+ bracket accounts for 21% of 78724's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($39,564) 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 78724's IRS income metrics, 2020–2022.

Median income (2021→2022)
$39,564
▲ 8.9%
Filers earning $200K+
3.3%
▲ 0.7 pt
Total filers
13,760
▲ 5.5%
GET /zipc/v2/zipcodes/78724/soi?year=… $34K 2020 $36K 2021 $40K 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 78724 ZCTA.

2000
15,428
 
2010
21,696
▲ +40.6%
2020
29,680
▲ +36.8%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number480420
City AliasesAustin

06Frequently Asked Questions

What county is ZIP code 78724 in?

ZIP code 78724 is in Travis County, Texas (county FIPS code 48453).

What city is ZIP code 78724?

The primary USPS city for 78724 is Austin, TX.

What metro area (MSA) is 78724 in?

78724 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78724?

The 2020 Census population of 78724 was 29,680 residents.

What is the median income in ZIP code 78724?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78724 is about $39,564, with around 3% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.