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US ZIP Code Profile

ZIP Code 91340
San Fernando, California

ZIP code 91340 is in San Fernando, located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim metro area. Its 2020 Census population was 34,610. The estimated median adjusted gross income per tax return is $39,990, and about 1% of filers report $200,000 or more.

2020 Population
34,610
Census ZCTA
County
Los Angeles
FIPS 06037
Median income (est.)
$39,990
IRS SOI 2022
Land Area
3.381 mi²
+ 0 mi² water

01Location & Geography

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

Primary CitySan Fernando, 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
Coordinates34.286686, -118.43508
Land / Water Area3.381 mi² land · 0 mi² water

02Income & Economics

Distribution of the 15,440 individual tax returns filed in 91340 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
30.7%
$25K–$50K
32.2%
$50K–$75K
17.8%
$75K–$100K
8.9%
$100K–$200K
9.3%
$200K+
1.2%
The $200,000+ bracket accounts for 7% of 91340's total adjusted gross income, from 1% of returns — a concentration that drives the gap between the median ($39,990) 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 91340's IRS income metrics, 2020–2022.

Median income (2021→2022)
$39,990
▲ 5.2%
Filers earning $200K+
1.2%
▲ 0.2 pt
Total filers
15,440
▼ 1.9%
GET /zipc/v2/zipcodes/91340/soi?year=… $35K 2020 $38K 2021 $40K 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 91340 ZCTA.

2000
33,373
 
2010
34,188
▲ +2.4%
2020
34,610
▲ +1.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 91340. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 91340

San Fernando and its immediate neighbors, sorted by distance.

3 mi
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Distance from 91340 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 SortB
USPS Finance Number056780
City AliasesSan Fernando

07Frequently Asked Questions

What county is ZIP code 91340 in?

ZIP code 91340 is in Los Angeles County, California (county FIPS code 06037).

What city is ZIP code 91340?

The primary USPS city for 91340 is San Fernando, CA.

What metro area (MSA) is 91340 in?

91340 is part of the Los Angeles-Long Beach-Anaheim, CA Metro Area (MSA code 31080).

What is the population of ZIP code 91340?

The 2020 Census population of 91340 was 34,610 residents.

What is the median income in ZIP code 91340?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 91340 is about $39,990, with around 1% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.