Get API Key →
US ZIP Code Profile

ZIP Code 91790
West Covina, California

ZIP code 91790 is in West Covina, located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim metro area. Its 2020 Census population was 46,364. The estimated median adjusted gross income per tax return is $46,793, and about 3% of filers report $200,000 or more.

2020 Population
46,364
Census ZCTA
County
Los Angeles
FIPS 06037
Median income (est.)
$46,793
IRS SOI 2022
Land Area
5.773 mi²
+ 0.027 mi² water

01Location & Geography

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

Primary CityWest Covina, 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
Coordinates34.066963, -117.937004
Land / Water Area5.773 mi² land · 0.027 mi² water

02Income & Economics

Distribution of the 21,810 individual tax returns filed in 91790 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
27.1%
$25K–$50K
26.3%
$50K–$75K
16.7%
$75K–$100K
10.2%
$100K–$200K
16.3%
$200K+
3.4%
The $200,000+ bracket accounts for 16% of 91790's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($46,793) 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 91790's IRS income metrics, 2020–2022.

Median income (2021→2022)
$46,793
▲ 6.0%
Filers earning $200K+
3.4%
▲ 0.5 pt
Total filers
21,810
▼ 1.4%
GET /zipc/v2/zipcodes/91790/soi?year=… $41K 2020 $44K 2021 $47K 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 91790 ZCTA.

2000
44,085
 
2010
44,907
▲ +1.9%
2020
46,364
▲ +3.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 91790. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 91790

West Covina and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 91790 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 Number058343
City AliasesWest Covina

07Frequently Asked Questions

What county is ZIP code 91790 in?

ZIP code 91790 is in Los Angeles County, California (county FIPS code 06037).

What city is ZIP code 91790?

The primary USPS city for 91790 is West Covina, CA.

What metro area (MSA) is 91790 in?

91790 is part of the Los Angeles-Long Beach-Anaheim, CA Metro Area (MSA code 31080).

What is the population of ZIP code 91790?

The 2020 Census population of 91790 was 46,364 residents.

What is the median income in ZIP code 91790?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 91790 is about $46,793, with around 3% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.