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US ZIP Code Profile

ZIP Code 80129
Littleton, Colorado

ZIP code 80129 is in Littleton, located in Douglas County, Colorado, within the Denver-Aurora-Lakewood metro area. Its 2020 Census population was 29,703. The estimated median adjusted gross income per tax return is $87,872, and about 17% of filers report $200,000 or more.

2020 Population
29,703
Census ZCTA
County
Douglas
FIPS 08035
Median income (est.)
$87,872
IRS SOI 2022
Land Area
7.459 mi²
+ 0.037 mi² water

01Location & Geography

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

Primary CityLittleton, CO
CountyDouglas County (FIPS 08035)
StateColorado (FIPS 08)
Metro Area (MSA)Denver-Aurora-Lakewood, CO Metro Area (19740)
Census Region / DivisionWest Region · Mountain Division
Coordinates39.545536, -105.01035
Land / Water Area7.459 mi² land · 0.037 mi² water

02Income & Economics

Distribution of the 16,230 individual tax returns filed in 80129 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
19.5%
$25K–$50K
12.7%
$50K–$75K
12.5%
$75K–$100K
10.3%
$100K–$200K
27.9%
$200K+
17.1%
The $200,000+ bracket accounts for 52% of 80129's total adjusted gross income, from 17% of returns — a concentration that drives the gap between the median ($87,872) 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 80129's IRS income metrics, 2020–2022.

Median income (2021→2022)
$87,872
▲ 2.0%
Filers earning $200K+
17.1%
▲ 0.4 pt
Total filers
16,230
▲ 2.3%
GET /zipc/v2/zipcodes/80129/soi?year=… $80K 2020 $86K 2021 $88K 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 80129 ZCTA.

2010
27,007
 
2020
29,703
▲ +10.0%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 80129. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 80129

Littleton and its immediate neighbors, sorted by distance.

3 mi
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Distance from 80129 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 SortB
USPS Finance Number075580
City AliasesHighlands Ranch, Littleton, Hghlnds Ranch

07Frequently Asked Questions

What county is ZIP code 80129 in?

ZIP code 80129 is in Douglas County, Colorado (county FIPS code 08035).

What city is ZIP code 80129?

The primary USPS city for 80129 is Littleton, CO.

What metro area (MSA) is 80129 in?

80129 is part of the Denver-Aurora-Lakewood, CO Metro Area (MSA code 19740).

What is the population of ZIP code 80129?

The 2020 Census population of 80129 was 29,703 residents.

What is the median income in ZIP code 80129?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 80129 is about $87,872, with around 17% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.