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US ZIP Code Profile

ZIP Code 78730
Austin, Texas

ZIP code 78730 is in Austin, located in Travis County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 9,403. The estimated median adjusted gross income per tax return is $117,164, and about 37% of filers report $200,000 or more.

2020 Population
9,403
Census ZCTA
County
Travis
FIPS 48453
Median income (est.)
$117,164
IRS SOI 2022
Land Area
14.577 mi²
+ 0.348 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
Coordinates30.370285, -97.83615
Land / Water Area14.577 mi² land · 0.348 mi² water

02Income & Economics

Distribution of the 4,430 individual tax returns filed in 78730 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
17.2%
$25K–$50K
12.4%
$50K–$75K
10.6%
$75K–$100K
7.2%
$100K–$200K
15.1%
$200K+
37.5%
The $200,000+ bracket accounts for 87% of 78730's total adjusted gross income, from 37% of returns — a concentration that drives the gap between the median ($117,164) 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 78730's IRS income metrics, 2020–2022.

Median income (2021→2022)
$117,164
▲ 1.5%
Filers earning $200K+
37.5%
▼ 0.0 pt
Total filers
4,430
▲ 0.7%
GET /zipc/v2/zipcodes/78730/soi?year=… $95K 2020 $115K 2021 $117K 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 78730 ZCTA.

2000
4,885
 
2010
7,955
▲ +62.8%
2020
9,403
▲ +18.2%

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 78730 in?

ZIP code 78730 is in Travis County, Texas (county FIPS code 48453).

What city is ZIP code 78730?

The primary USPS city for 78730 is Austin, TX.

What metro area (MSA) is 78730 in?

78730 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78730?

The 2020 Census population of 78730 was 9,403 residents.

What is the median income in ZIP code 78730?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78730 is about $117,164, with around 37% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.