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US ZIP Code Profile

ZIP Code 78703
Austin, Texas

ZIP code 78703 is in Austin, located in Travis County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 22,194. The estimated median adjusted gross income per tax return is $126,802, and about 35% of filers report $200,000 or more.

2020 Population
22,194
Census ZCTA
County
Travis
FIPS 48453
Median income (est.)
$126,802
IRS SOI 2022
Land Area
5.574 mi²
+ 0.268 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
Coordinates30.293268, -97.76605
Land / Water Area5.574 mi² land · 0.268 mi² water

02Income & Economics

Distribution of the 10,870 individual tax returns filed in 78703 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
13.5%
$25K–$50K
11.1%
$50K–$75K
10.9%
$75K–$100K
8.9%
$100K–$200K
20.4%
$200K+
35.0%
The $200,000+ bracket accounts for 92% of 78703's total adjusted gross income, from 35% of returns — a concentration that drives the gap between the median ($126,802) 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 78703's IRS income metrics, 2020–2022.

Median income (2021→2022)
$126,802
▲ 7.1%
Filers earning $200K+
35.0%
▼ 0.1 pt
Total filers
10,870
▼ 0.2%
GET /zipc/v2/zipcodes/78703/soi?year=… $98K 2020 $118K 2021 $127K 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 78703 ZCTA.

2000
19,585
 
2010
19,690
▲ +0.5%
2020
22,194
▲ +12.7%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 78703. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 78703

Austin and its immediate neighbors, sorted by distance.

3 mi
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Distance from 78703 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS 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, Tarrytown

07Frequently Asked Questions

What county is ZIP code 78703 in?

ZIP code 78703 is in Travis County, Texas (county FIPS code 48453).

What city is ZIP code 78703?

The primary USPS city for 78703 is Austin, TX.

What metro area (MSA) is 78703 in?

78703 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78703?

The 2020 Census population of 78703 was 22,194 residents.

What is the median income in ZIP code 78703?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78703 is about $126,802, with around 35% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.