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US ZIP Code Profile

ZIP Code 91016
Monrovia, California

ZIP code 91016 is in Monrovia, located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim metro area. Its 2020 Census population was 41,852. The estimated median adjusted gross income per tax return is $58,609, and about 10% of filers report $200,000 or more.

2020 Population
41,852
Census ZCTA
County
Los Angeles
FIPS 06037
Median income (est.)
$58,609
IRS SOI 2022
Land Area
8.489 mi²
+ 0.088 mi² water

01Location & Geography

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

Primary CityMonrovia, 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
Coordinates34.1528, -118.00048
Land / Water Area8.489 mi² land · 0.088 mi² water

02Income & Economics

Distribution of the 19,640 individual tax returns filed in 91016 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
23.8%
$25K–$50K
20.9%
$50K–$75K
15.4%
$75K–$100K
10.8%
$100K–$200K
19.1%
$200K+
9.9%
The $200,000+ bracket accounts for 41% of 91016's total adjusted gross income, from 10% of returns — a concentration that drives the gap between the median ($58,609) 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 91016's IRS income metrics, 2020–2022.

Median income (2021→2022)
$58,609
▲ 6.5%
Filers earning $200K+
9.9%
▲ 1.0 pt
Total filers
19,640
▼ 1.0%
GET /zipc/v2/zipcodes/91016/soi?year=… $49K 2020 $55K 2021 $59K 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 91016 ZCTA.

2000
41,050
 
2010
40,598
▼ -1.1%
2020
41,852
▲ +3.1%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 91016. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 91016

Monrovia and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 91016 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 Number055076
City AliasesMonrovia

07Frequently Asked Questions

What county is ZIP code 91016 in?

ZIP code 91016 is in Los Angeles County, California (county FIPS code 06037).

What city is ZIP code 91016?

The primary USPS city for 91016 is Monrovia, CA.

What metro area (MSA) is 91016 in?

91016 is part of the Los Angeles-Long Beach-Anaheim, CA Metro Area (MSA code 31080).

What is the population of ZIP code 91016?

The 2020 Census population of 91016 was 41,852 residents.

What is the median income in ZIP code 91016?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 91016 is about $58,609, with around 10% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.