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US ZIP Code Profile

ZIP Code 78701
Austin, Texas

ZIP code 78701 is in Austin, located in Travis County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 11,625. The estimated median adjusted gross income per tax return is $129,250, and about 31% of filers report $200,000 or more.

2020 Population
11,625
Census ZCTA
County
Travis
FIPS 48453
Median income (est.)
$129,250
IRS SOI 2022
Land Area
1.629 mi²
+ 0.102 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
Coordinates30.270569, -97.74259
Land / Water Area1.629 mi² land · 0.102 mi² water

02Income & Economics

Distribution of the 7,390 individual tax returns filed in 78701 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
11.5%
$25K–$50K
9.5%
$50K–$75K
11.0%
$75K–$100K
10.2%
$100K–$200K
27.1%
$200K+
30.9%
The $200,000+ bracket accounts for 88% of 78701's total adjusted gross income, from 31% of returns — a concentration that drives the gap between the median ($129,250) 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 78701's IRS income metrics, 2020–2022.

Median income (2021→2022)
$129,250
▲ 3.6%
Filers earning $200K+
30.9%
▼ 0.5 pt
Total filers
7,390
▲ 9.2%
GET /zipc/v2/zipcodes/78701/soi?year=… $103K 2020 $125K 2021 $129K 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 78701 ZCTA.

2000
3,855
 
2010
6,841
▲ +77.5%
2020
11,625
▲ +69.9%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 78701. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 78701

Austin and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 78701 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

07Frequently Asked Questions

What county is ZIP code 78701 in?

ZIP code 78701 is in Travis County, Texas (county FIPS code 48453).

What city is ZIP code 78701?

The primary USPS city for 78701 is Austin, TX.

What metro area (MSA) is 78701 in?

78701 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78701?

The 2020 Census population of 78701 was 11,625 residents.

What is the median income in ZIP code 78701?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78701 is about $129,250, with around 31% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.