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US ZIP Code Profile

ZIP Code 78745
Austin, Texas

ZIP code 78745 is in Austin, located in Travis County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 59,843. The estimated median adjusted gross income per tax return is $56,197, and about 7% of filers report $200,000 or more.

2020 Population
59,843
Census ZCTA
County
Travis
FIPS 48453
Median income (est.)
$56,197
IRS SOI 2022
Land Area
13.358 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
Coordinates30.20685, -97.79738
Land / Water Area13.358 mi² land · 0 mi² water

02Income & Economics

Distribution of the 31,130 individual tax returns filed in 78745 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
20.2%
$25K–$50K
25.1%
$50K–$75K
19.0%
$75K–$100K
11.3%
$100K–$200K
17.0%
$200K+
7.4%
The $200,000+ bracket accounts for 33% of 78745's total adjusted gross income, from 7% of returns — a concentration that drives the gap between the median ($56,197) 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 78745's IRS income metrics, 2020–2022.

Median income (2021→2022)
$56,197
▲ 13.9%
Filers earning $200K+
7.4%
▲ 1.2 pt
Total filers
31,130
▲ 0.2%
GET /zipc/v2/zipcodes/78745/soi?year=… $45K 2020 $49K 2021 $56K 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 78745 ZCTA.

2000
53,044
 
2010
55,614
▲ +4.8%
2020
59,843
▲ +7.6%

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, Sunset Valley

06Frequently Asked Questions

What county is ZIP code 78745 in?

ZIP code 78745 is in Travis County, Texas (county FIPS code 48453).

What city is ZIP code 78745?

The primary USPS city for 78745 is Austin, TX.

What metro area (MSA) is 78745 in?

78745 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78745?

The 2020 Census population of 78745 was 59,843 residents.

What is the median income in ZIP code 78745?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78745 is about $56,197, with around 7% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.