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US ZIP Code Profile

ZIP Code 78736
Austin, Texas

ZIP code 78736 is in Austin, located in Travis County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 10,165. The estimated median adjusted gross income per tax return is $71,875, and about 16% of filers report $200,000 or more.

2020 Population
10,165
Census ZCTA
County
Travis
FIPS 48453
Median income (est.)
$71,875
IRS SOI 2022
Land Area
28.987 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
Coordinates30.261084, -97.959435
Land / Water Area28.987 mi² land · 0 mi² water

02Income & Economics

Distribution of the 4,700 individual tax returns filed in 78736 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
17.9%
$25K–$50K
18.7%
$50K–$75K
15.3%
$75K–$100K
10.8%
$100K–$200K
20.8%
$200K+
16.4%
The $200,000+ bracket accounts for 58% of 78736's total adjusted gross income, from 16% of returns — a concentration that drives the gap between the median ($71,875) 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 78736's IRS income metrics, 2020–2022.

Median income (2021→2022)
$71,875
▲ 8.2%
Filers earning $200K+
16.4%
▲ 1.2 pt
Total filers
4,700
▼ 0.8%
GET /zipc/v2/zipcodes/78736/soi?year=… $62K 2020 $66K 2021 $72K 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 78736 ZCTA.

2000
6,897
 
2010
6,946
▲ +0.7%
2020
10,165
▲ +46.3%

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, Bee Cave, Bee Caves, Circleville, Oak Hill

06Frequently Asked Questions

What county is ZIP code 78736 in?

ZIP code 78736 is in Travis County, Texas (county FIPS code 48453).

What city is ZIP code 78736?

The primary USPS city for 78736 is Austin, TX.

What metro area (MSA) is 78736 in?

78736 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78736?

The 2020 Census population of 78736 was 10,165 residents.

What is the median income in ZIP code 78736?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78736 is about $71,875, with around 16% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.