ZIP Code 90721 in Los Alamitos, CA

Data Last Updated: February 1, 2026
City:Los Alamitos, California
County:Orange County
Timezone:Pacific (GMT -08:00)
Local Time:9:34:37 AM
Population:No Population Data
Area Codes:562 / 657 / 714
Classification:PO Box
Coordinates:33.8032, -118.0714
Quick Link:
https://www.zip-codes.com/zip-code/90721/zip-code-90721.asp

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90721 - Los Alamitos, CA

ZIP Code 90721, Los Alamitos

Small Town Unique ZIP No Census Data
LocationOrange County, CA
Area0 sq mi Single Point
Delivery Points49 (22 businesses)
PO Boxes27
ZIP CreatedBefore Oct 2004
Enclosed InZIP Code 90720
Key Facts
  • This is a PO Box facility ZIP within Los Alamitos, serving 27 boxes and 22 businesses
  • Residents have access to street delivery through the adjacent ZIP 90720, which covers the main Los Alamitos area
  • Reagan Street contains 40 delivery points with unit-based addressing, suggesting a multi-tenant building or business complex
  • The ZIP includes 79 ZIP+4 records split between 40 street segments and 39 PO Box entries
  • Located in Orange County at coordinates 33.803°N, 118.071°W

Mail Delivery Structure

The facility includes one street segment on Reagan Street with 40 delivery points, all configured for unit-based addressing. This suggests the ZIP supports a small mixed-use development or business complex that uses both PO Box service and direct delivery. The arrangement is typical for Orange County's suburban areas, where PO Box ZIPs often operate alongside standard carrier routes rather than replacing them.

Street Name Patterns

Single Street Focus Unit Based Addressing

The ZIP contains only Reagan Street with unit-based delivery, indicating a concentrated service area likely serving a single building complex or small business district.

Nearby Areas

Los Alamitos Rossmoor Cypress El Dorado ABC

Business & Employment Statistics


ZIP Code 90721 supports both business and residential activity. According to the Business Census (2024), there are 3 business establishments, employing about 42 people with an annual payroll of $1,667,000.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:1,188Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:3Source: CBP
1st Quarter Payroll:$418,000Source: CBP
Annual Payroll:$1,667,000Source: CBP
# of Employees:42Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 90721 is located in Orange County, California, within the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area (CBSA 31080) and California's 45th Congressional District. This Metro area has a population of 0 people, about 0.00% of whom live in ZIP Code 90721, and is subdivided into the Anaheim-Santa Ana-Irvine, CA division. It covers 0 sq mi of land and a water area of 0 sq mi.

CBSA Name:Los Angeles-Long Beach-Anaheim, CASource: Census
CBSA Number:31080Source: Census
CBSA Type:MetroSource: Census
CBSA Division:Anaheim-Santa Ana-Irvine, CA (CBSA Div 11244)Source: Census
CBSA Population:0Source: Census
MSA:Los Angeles-Riverside-Orange County, CASource: Census
Land Area:--Source: Census
Water Area:--Source: Census
Congressional District:45Source: USPS
Congressional Land Area:330.39 sq miSource: Census
PMSA:Orange County, CA PMSASource: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:0643224Source: Census
Place Name:Los Alamitos city; CaliforniaSource: Census

Adjacent & Nearby ZIP Codes


90723 | | 90720

Schools in ZIP Code 90721


We could not locate which school district 90721 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Oak Middle 10821 Oak St.
Los Alamitos, CA 90720
District: Los Alamitos Unified School DistrictNearby
Los Alamitos Elementary 10862 Bloomfield St.
Los Alamitos, CA 90720
District: Los Alamitos Unified School DistrictNearby
Los Alamitos High 3591 Cerritos Ave.
Los Alamitos, CA 90720
District: Los Alamitos Unified School DistrictNearby
Sharon Christa Mcauliffe Middle 4112 Cerritos Ave.
Los Alamitos, CA 90720
District: Los Alamitos Unified School DistrictNearby
Rossmoor Elementary 3272 Shakespeare Dr.
Los Alamitos, CA 90720
District: Los Alamitos Unified School DistrictNearby
Montessori Greenhouse Schools 4001 Howard Ave
Los Alamitos, CA 90720
District: Private SchoolNearby
Grace Christian School 4545 Myra Ave
Cypress, CA 90630
District: Private SchoolNearby
Del Sol School, Inc 5400 Myra Ave
Cypress, CA 90630
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 90721


Touro University Worldwide 10601 Calle Lee #179
Los Alamitos, CA 90720
Type: Post Secondary
Columbia College - Los Alamitos 11206 Lexington Avenue, Suite 110 Building 244 Joint Forces Training Base
Los Alamitos, CA 90720-5177
Type: Post Secondary
Cru Institute Of Cosmetology And Barbering 11889 Valley View St Suite C
Garden Grove, CA 92845-4321
Type: Post Secondary
California State University-Long Beach 1250 Bellflower Blvd
Long Beach, CA 90840-0115
Type: Post Secondary
Career Academy Of Beauty 12471 Valley View
Garden Grove, CA 92845
Type: Post Secondary
Abc Adult School - Cabrillo Lane 20122 Cabrillo Lane
Cerritos, CA 90703-7748
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.

  1. U.S. Postal Service [Last Updated: 2/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 2/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 2/1/2026], https://nces.ed.gov