Get API Key →
US ZIP Code Profile

ZIP Code 78739
Austin, Texas

ZIP code 78739 is in Austin, located in Travis County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 21,854. The estimated median adjusted gross income per tax return is $165,347, and about 42% of filers report $200,000 or more.

2020 Population
21,854
Census ZCTA
County
Travis
FIPS 48453
Median income (est.)
$165,347
IRS SOI 2022
Land Area
11.421 mi²
+ 0 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
Coordinates30.178469, -97.88869
Land / Water Area11.421 mi² land · 0 mi² water

02Income & Economics

Distribution of the 8,940 individual tax returns filed in 78739 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
16.1%
$25K–$50K
7.2%
$50K–$75K
6.5%
$75K–$100K
5.5%
$100K–$200K
22.6%
$200K+
42.2%
The $200,000+ bracket accounts for 81% of 78739's total adjusted gross income, from 42% of returns — a concentration that drives the gap between the median ($165,347) 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 78739's IRS income metrics, 2020–2022.

Median income (2021→2022)
$165,347
▲ 1.1%
Filers earning $200K+
42.2%
▲ 1.0 pt
Total filers
8,940
▲ 2.8%
GET /zipc/v2/zipcodes/78739/soi?year=… $146K 2020 $164K 2021 $165K 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 78739 ZCTA.

2000
8,643
 
2010
16,792
▲ +94.3%
2020
21,854
▲ +30.1%

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 78739 in?

ZIP code 78739 is in Travis County, Texas (county FIPS code 48453).

What city is ZIP code 78739?

The primary USPS city for 78739 is Austin, TX.

What metro area (MSA) is 78739 in?

78739 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78739?

The 2020 Census population of 78739 was 21,854 residents.

What is the median income in ZIP code 78739?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78739 is about $165,347, with around 42% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.