Get API Key →
US ZIP Code Profile

ZIP Code 91801
Alhambra, California

ZIP code 91801 is in Alhambra, located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim metro area. Its 2020 Census population was 53,669. The estimated median adjusted gross income per tax return is $47,211, and about 5% of filers report $200,000 or more.

2020 Population
53,669
Census ZCTA
County
Los Angeles
FIPS 06037
Median income (est.)
$47,211
IRS SOI 2022
Land Area
4.358 mi²
+ 0 mi² water

01Location & Geography

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

Primary CityAlhambra, 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
Coordinates34.09073, -118.127525
Land / Water Area4.358 mi² land · 0 mi² water

02Income & Economics

Distribution of the 25,830 individual tax returns filed in 91801 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
28.6%
$25K–$50K
24.1%
$50K–$75K
16.4%
$75K–$100K
10.5%
$100K–$200K
15.4%
$200K+
5.0%
The $200,000+ bracket accounts for 26% of 91801's total adjusted gross income, from 5% of returns — a concentration that drives the gap between the median ($47,211) 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 91801's IRS income metrics, 2020–2022.

Median income (2021→2022)
$47,211
▲ 6.0%
Filers earning $200K+
5.0%
▲ 0.4 pt
Total filers
25,830
▼ 1.4%
GET /zipc/v2/zipcodes/91801/soi?year=… $40K 2020 $45K 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 91801 ZCTA.

2000
54,381
 
2010
52,735
▼ -3.0%
2020
53,669
▲ +1.8%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 91801. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 91801

Alhambra and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 91801 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 Number050108
City AliasesAlhambra

07Frequently Asked Questions

What county is ZIP code 91801 in?

ZIP code 91801 is in Los Angeles County, California (county FIPS code 06037).

What city is ZIP code 91801?

The primary USPS city for 91801 is Alhambra, CA.

What metro area (MSA) is 91801 in?

91801 is part of the Los Angeles-Long Beach-Anaheim, CA Metro Area (MSA code 31080).

What is the population of ZIP code 91801?

The 2020 Census population of 91801 was 53,669 residents.

What is the median income in ZIP code 91801?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 91801 is about $47,211, with around 5% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.