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US ZIP Code Profile

ZIP Code 91103
Pasadena, California

ZIP code 91103 is in Pasadena, located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim metro area. Its 2020 Census population was 26,887. The estimated median adjusted gross income per tax return is $46,997, and about 12% of filers report $200,000 or more.

2020 Population
26,887
Census ZCTA
County
Los Angeles
FIPS 06037
Median income (est.)
$46,997
IRS SOI 2022
Land Area
5.393 mi²
+ 0.057 mi² water

01Location & Geography

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

Primary CityPasadena, 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
Coordinates34.169537, -118.16494
Land / Water Area5.393 mi² land · 0.057 mi² water

02Income & Economics

Distribution of the 12,000 individual tax returns filed in 91103 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
27.4%
$25K–$50K
25.7%
$50K–$75K
13.2%
$75K–$100K
8.2%
$100K–$200K
14.1%
$200K+
11.5%
The $200,000+ bracket accounts for 58% of 91103's total adjusted gross income, from 12% of returns — a concentration that drives the gap between the median ($46,997) 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 91103's IRS income metrics, 2020–2022.

Median income (2021→2022)
$46,997
▲ 5.9%
Filers earning $200K+
11.5%
▲ 0.9 pt
Total filers
12,000
▼ 1.9%
GET /zipc/v2/zipcodes/91103/soi?year=… $40K 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 91103 ZCTA.

2000
27,887
 
2010
27,480
▼ -1.5%
2020
26,887
▼ -2.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 91103. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 91103

Pasadena and its immediate neighbors, sorted by distance.

3 mi
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Distance from 91103 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 Number055862
City AliasesPasadena

07Frequently Asked Questions

What county is ZIP code 91103 in?

ZIP code 91103 is in Los Angeles County, California (county FIPS code 06037).

What city is ZIP code 91103?

The primary USPS city for 91103 is Pasadena, CA.

What metro area (MSA) is 91103 in?

91103 is part of the Los Angeles-Long Beach-Anaheim, CA Metro Area (MSA code 31080).

What is the population of ZIP code 91103?

The 2020 Census population of 91103 was 26,887 residents.

What is the median income in ZIP code 91103?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 91103 is about $46,997, with around 12% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.