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US ZIP Code Profile

ZIP Code 91020
Montrose, California

ZIP code 91020 is in Montrose, located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim metro area. Its 2020 Census population was 8,439. The estimated median adjusted gross income per tax return is $62,716, and about 9% of filers report $200,000 or more.

2020 Population
8,439
Census ZCTA
County
Los Angeles
FIPS 06037
Median income (est.)
$62,716
IRS SOI 2022
Land Area
0.752 mi²
+ 0 mi² water

01Location & Geography

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

Primary CityMontrose, 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
Coordinates34.21134, -118.23065
Land / Water Area0.752 mi² land · 0 mi² water

02Income & Economics

Distribution of the 3,770 individual tax returns filed in 91020 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
23.6%
$25K–$50K
18.6%
$50K–$75K
15.4%
$75K–$100K
11.4%
$100K–$200K
22.0%
$200K+
9.0%
The $200,000+ bracket accounts for 34% of 91020's total adjusted gross income, from 9% of returns — a concentration that drives the gap between the median ($62,716) 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 91020's IRS income metrics, 2020–2022.

Median income (2021→2022)
$62,716
▲ 6.8%
Filers earning $200K+
9.0%
▲ 1.4 pt
Total filers
3,770
▼ 1.3%
GET /zipc/v2/zipcodes/91020/soi?year=… $53K 2020 $59K 2021 $63K 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 91020 ZCTA.

2000
7,515
 
2010
8,415
▲ +12.0%
2020
8,439
▲ +0.3%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 91020. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 91020

Montrose and its immediate neighbors, sorted by distance.

3 mi
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Distance from 91020 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 SortB
USPS Finance Number055136
City AliasesMontrose

07Frequently Asked Questions

What county is ZIP code 91020 in?

ZIP code 91020 is in Los Angeles County, California (county FIPS code 06037).

What city is ZIP code 91020?

The primary USPS city for 91020 is Montrose, CA.

What metro area (MSA) is 91020 in?

91020 is part of the Los Angeles-Long Beach-Anaheim, CA Metro Area (MSA code 31080).

What is the population of ZIP code 91020?

The 2020 Census population of 91020 was 8,439 residents.

What is the median income in ZIP code 91020?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 91020 is about $62,716, with around 9% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.