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US ZIP Code Profile

ZIP Code 91324
Northridge, California

ZIP code 91324 is in Northridge, located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim metro area. Its 2020 Census population was 29,500. The estimated median adjusted gross income per tax return is $48,503, and about 8% of filers report $200,000 or more.

2020 Population
29,500
Census ZCTA
County
Los Angeles
FIPS 06037
Median income (est.)
$48,503
IRS SOI 2022
Land Area
4.389 mi²
+ 0.025 mi² water

01Location & Geography

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

Primary CityNorthridge, 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
Coordinates34.23821, -118.55029
Land / Water Area4.389 mi² land · 0.025 mi² water

02Income & Economics

Distribution of the 14,340 individual tax returns filed in 91324 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
28.1%
$25K–$50K
23.3%
$50K–$75K
14.1%
$75K–$100K
9.3%
$100K–$200K
17.2%
$200K+
8.0%
The $200,000+ bracket accounts for 36% of 91324's total adjusted gross income, from 8% of returns — a concentration that drives the gap between the median ($48,503) 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 91324's IRS income metrics, 2020–2022.

Median income (2021→2022)
$48,503
▲ 3.8%
Filers earning $200K+
8.0%
▲ 0.2 pt
Total filers
14,340
▼ 1.4%
GET /zipc/v2/zipcodes/91324/soi?year=… $42K 2020 $47K 2021 $49K 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 91324 ZCTA.

2000
25,731
 
2010
27,669
▲ +7.5%
2020
29,500
▲ +6.6%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 91324. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 91324

Northridge and its immediate neighbors, sorted by distance.

3 mi
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Distance from 91324 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 Number055460
City AliasesNorthridge

07Frequently Asked Questions

What county is ZIP code 91324 in?

ZIP code 91324 is in Los Angeles County, California (county FIPS code 06037).

What city is ZIP code 91324?

The primary USPS city for 91324 is Northridge, CA.

What metro area (MSA) is 91324 in?

91324 is part of the Los Angeles-Long Beach-Anaheim, CA Metro Area (MSA code 31080).

What is the population of ZIP code 91324?

The 2020 Census population of 91324 was 29,500 residents.

What is the median income in ZIP code 91324?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 91324 is about $48,503, with around 8% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.