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US ZIP Code Profile

ZIP Code 78641
Leander, Texas

ZIP code 78641 is in Leander, located in Williamson County, Texas, within the Austin-Round Rock metro area. Its 2020 Census population was 83,426. The estimated median adjusted gross income per tax return is $83,870, and about 19% of filers report $200,000 or more.

2020 Population
83,426
Census ZCTA
County
Williamson
FIPS 48491
Median income (est.)
$83,870
IRS SOI 2022
Land Area
126.39 mi²
+ 2.009 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityLeander, TX
CountyWilliamson County (FIPS 48491)
StateTexas (FIPS 48)
Metro Area (MSA)Austin-Round Rock, TX Metro Area (12420)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.562557, -97.907845
Land / Water Area126.39 mi² land · 2.009 mi² water

02Income & Economics

Distribution of the 46,990 individual tax returns filed in 78641 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
18.3%
$25K–$50K
15.8%
$50K–$75K
12.4%
$75K–$100K
9.8%
$100K–$200K
25.0%
$200K+
18.7%
The $200,000+ bracket accounts for 56% of 78641's total adjusted gross income, from 19% of returns — a concentration that drives the gap between the median ($83,870) 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 78641's IRS income metrics, 2020–2022.

Median income (2021→2022)
$83,870
▲ 10.5%
Filers earning $200K+
18.7%
▲ 3.1 pt
Total filers
46,990
▲ 7.4%
GET /zipc/v2/zipcodes/78641/soi?year=… $69K 2020 $76K 2021 $84K 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 78641 ZCTA.

2000
19,224
 
2010
44,295
▲ +130.4%
2020
83,426
▲ +88.3%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number485040
City AliasesCedar Park, Leander, Volente, Whitestone

06Frequently Asked Questions

What county is ZIP code 78641 in?

ZIP code 78641 is in Williamson County, Texas (county FIPS code 48491).

What city is ZIP code 78641?

The primary USPS city for 78641 is Leander, TX.

What metro area (MSA) is 78641 in?

78641 is part of the Austin-Round Rock, TX Metro Area (MSA code 12420).

What is the population of ZIP code 78641?

The 2020 Census population of 78641 was 83,426 residents.

What is the median income in ZIP code 78641?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78641 is about $83,870, with around 19% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.