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US ZIP Code Profile

ZIP Code 91770
Rosemead, California

ZIP code 91770 is in Rosemead, located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim metro area. Its 2020 Census population was 59,360. The estimated median adjusted gross income per tax return is $37,736, and about 2% of filers report $200,000 or more.

2020 Population
59,360
Census ZCTA
County
Los Angeles
FIPS 06037
Median income (est.)
$37,736
IRS SOI 2022
Land Area
6.423 mi²
+ 0.053 mi² water

01Location & Geography

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

Primary CityRosemead, 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
Coordinates34.065495, -118.084526
Land / Water Area6.423 mi² land · 0.053 mi² water

02Income & Economics

Distribution of the 29,060 individual tax returns filed in 91770 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
36.1%
$25K–$50K
27.3%
$50K–$75K
15.3%
$75K–$100K
8.6%
$100K–$200K
10.3%
$200K+
2.3%
The $200,000+ bracket accounts for 16% of 91770's total adjusted gross income, from 2% of returns — a concentration that drives the gap between the median ($37,736) 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 91770's IRS income metrics, 2020–2022.

Median income (2021→2022)
$37,736
▲ 3.4%
Filers earning $200K+
2.3%
▲ 0.1 pt
Total filers
29,060
▼ 2.0%
GET /zipc/v2/zipcodes/91770/soi?year=… $32K 2020 $36K 2021 $38K 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 91770 ZCTA.

2000
61,605
 
2010
62,097
▲ +0.8%
2020
59,360
▼ -4.4%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 91770. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 91770

Rosemead and its immediate neighbors, sorted by distance.

3 mi
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Distance from 91770 to any ZIP

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06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number056618
City AliasesRosemead

07Frequently Asked Questions

What county is ZIP code 91770 in?

ZIP code 91770 is in Los Angeles County, California (county FIPS code 06037).

What city is ZIP code 91770?

The primary USPS city for 91770 is Rosemead, CA.

What metro area (MSA) is 91770 in?

91770 is part of the Los Angeles-Long Beach-Anaheim, CA Metro Area (MSA code 31080).

What is the population of ZIP code 91770?

The 2020 Census population of 91770 was 59,360 residents.

What is the median income in ZIP code 91770?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 91770 is about $37,736, with around 2% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.