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US ZIP Code Profile

ZIP Code 80124
Lone Tree, Colorado

ZIP code 80124 is in Lone Tree, located in Douglas County, Colorado, within the Denver-Aurora-Lakewood metro area. Its 2020 Census population was 22,541. The estimated median adjusted gross income per tax return is $79,074, and about 19% of filers report $200,000 or more.

2020 Population
22,541
Census ZCTA
County
Douglas
FIPS 08035
Median income (est.)
$79,074
IRS SOI 2022
Land Area
9.49 mi²
+ 0.002 mi² water

01Location & Geography

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

Primary CityLone Tree, CO
CountyDouglas County (FIPS 08035)
StateColorado (FIPS 08)
Metro Area (MSA)Denver-Aurora-Lakewood, CO Metro Area (19740)
Census Region / DivisionWest Region · Mountain Division
Coordinates39.5328, -104.89122
Land / Water Area9.49 mi² land · 0.002 mi² water

02Income & Economics

Distribution of the 12,080 individual tax returns filed in 80124 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
18.2%
$25K–$50K
15.3%
$50K–$75K
14.6%
$75K–$100K
11.2%
$100K–$200K
21.4%
$200K+
19.3%
The $200,000+ bracket accounts for 64% of 80124's total adjusted gross income, from 19% of returns — a concentration that drives the gap between the median ($79,074) 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 80124's IRS income metrics, 2020–2022.

Median income (2021→2022)
$79,074
▲ 1.0%
Filers earning $200K+
19.3%
▼ 0.4 pt
Total filers
12,080
▲ 1.9%
GET /zipc/v2/zipcodes/80124/soi?year=… $73K 2020 $78K 2021 $79K 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 80124 ZCTA.

2000
12,701
 
2010
18,020
▲ +41.9%
2020
22,541
▲ +25.1%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 80124. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 80124

Lone Tree and its immediate neighbors, sorted by distance.

3 mi
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Distance from 80124 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 TypeNon-Postal Community Name, former postal facility or place name
Carrier Route SortB
USPS Finance Number075580
City AliasesLittleton, Lone Tree, Lonetree

07Frequently Asked Questions

What county is ZIP code 80124 in?

ZIP code 80124 is in Douglas County, Colorado (county FIPS code 08035).

What city is ZIP code 80124?

The primary USPS city for 80124 is Lone Tree, CO.

What metro area (MSA) is 80124 in?

80124 is part of the Denver-Aurora-Lakewood, CO Metro Area (MSA code 19740).

What is the population of ZIP code 80124?

The 2020 Census population of 80124 was 22,541 residents.

What is the median income in ZIP code 80124?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 80124 is about $79,074, 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.