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US ZIP Code Profile

ZIP Code 78725
Austin, Texas

ZIP code 78725 is in Austin, located in Travis County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 10,301. The estimated median adjusted gross income per tax return is $48,306, and about 3% of filers report $200,000 or more.

2020 Population
10,301
Census ZCTA
County
Travis
FIPS 48453
Median income (est.)
$48,306
IRS SOI 2022
Land Area
17.649 mi²
+ 0.627 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
Coordinates30.230011, -97.608574
Land / Water Area17.649 mi² land · 0.627 mi² water

02Income & Economics

Distribution of the 5,470 individual tax returns filed in 78725 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
23.6%
$25K–$50K
28.3%
$50K–$75K
20.8%
$75K–$100K
10.8%
$100K–$200K
13.5%
$200K+
2.9%
The $200,000+ bracket accounts for 16% of 78725's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($48,306) 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 78725's IRS income metrics, 2020–2022.

Median income (2021→2022)
$48,306
▲ 6.1%
Filers earning $200K+
2.9%
▲ 0.5 pt
Total filers
5,470
▲ 0.6%
GET /zipc/v2/zipcodes/78725/soi?year=… $42K 2020 $46K 2021 $48K 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 78725 ZCTA.

2000
1,836
 
2010
6,083
▲ +231.3%
2020
10,301
▲ +69.3%

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, Hornsby Bend

06Frequently Asked Questions

What county is ZIP code 78725 in?

ZIP code 78725 is in Travis County, Texas (county FIPS code 48453).

What city is ZIP code 78725?

The primary USPS city for 78725 is Austin, TX.

What metro area (MSA) is 78725 in?

78725 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78725?

The 2020 Census population of 78725 was 10,301 residents.

What is the median income in ZIP code 78725?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78725 is about $48,306, 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.