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US ZIP Code Profile

ZIP Code 90240
Downey, California

ZIP code 90240 is in Downey, located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim metro area. Its 2020 Census population was 26,495. The estimated median adjusted gross income per tax return is $51,729, and about 7% of filers report $200,000 or more.

2020 Population
26,495
Census ZCTA
County
Los Angeles
FIPS 06037
Median income (est.)
$51,729
IRS SOI 2022
Land Area
2.944 mi²
+ 0.071 mi² water

01Location & Geography

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

Primary CityDowney, CA
CountyLos Angeles County (FIPS 06037)
StateCalifornia (FIPS 06)
Metro Area (MSA)Los Angeles-Long Beach-Anaheim, CA Metro Area (31080)
Census Region / DivisionWest Region · Pacific Division
Coordinates33.95573, -118.11835
Land / Water Area2.944 mi² land · 0.071 mi² water

02Income & Economics

Distribution of the 12,380 individual tax returns filed in 90240 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
26.1%
$25K–$50K
22.9%
$50K–$75K
15.2%
$75K–$100K
10.7%
$100K–$200K
17.7%
$200K+
7.4%
The $200,000+ bracket accounts for 36% of 90240's total adjusted gross income, from 7% of returns — a concentration that drives the gap between the median ($51,729) 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 90240's IRS income metrics, 2020–2022.

Median income (2021→2022)
$51,729
▲ 6.6%
Filers earning $200K+
7.4%
▲ 0.7 pt
Total filers
12,380
▼ 2.1%
GET /zipc/v2/zipcodes/90240/soi?year=… $45K 2020 $49K 2021 $52K 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 90240 ZCTA.

2000
24,891
 
2010
25,876
▲ +4.0%
2020
26,495
▲ +2.4%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 90240. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 90240

Downey and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 90240 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 Number052250
City AliasesDowney

07Frequently Asked Questions

What county is ZIP code 90240 in?

ZIP code 90240 is in Los Angeles County, California (county FIPS code 06037).

What city is ZIP code 90240?

The primary USPS city for 90240 is Downey, CA.

What metro area (MSA) is 90240 in?

90240 is part of the Los Angeles-Long Beach-Anaheim, CA Metro Area (MSA code 31080).

What is the population of ZIP code 90240?

The 2020 Census population of 90240 was 26,495 residents.

What is the median income in ZIP code 90240?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 90240 is about $51,729, 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.