Teamsters Joint Council 42
Costco is unionized warehouse-by-warehouse, not company-wide. Below are the Costco locations currently represented by signatory Teamster Local Unions under the Costco National Master Agreement, organized by state and by the Local Union with jurisdiction.
Source: Teamster Local Union jurisdiction list, updated October 5, 2026.
Store Location · Current Job Openings · Each listing includes a map link and, when available, current Costco job openings near that location.
This list reflects Costco warehouses reported as Teamster-represented by each signatory Local Union and may not be complete or fully current. Not every Costco location nationwide is unionized. If your Costco warehouse is missing or you believe a listing is out of date, contact your Local Union.
California
Local 150
Sacramento Area
- Rancho Cordova
- Sacramento
- Sacramento – Expo Parkway
- West Sacramento (MDO)Distribution Center
Local 166
San Bernardino / Riverside Area
- Azusa
- Chino Hills
- Coachella
- Corona
- Monterey Park
- Moreno Valley
- Rancho Cucamonga
Local 542
San Diego / South Orange County Area
- Carlsbad
- Carmel Mountain (San Diego)
- Chula Vista
- Morena (San Diego)
- Rancho Del Rey (Chula Vista)
- San Juan Capistrano
- San Marcos
- Santee
- Southeast San Diego
- Vista
Local 572
Coastal Los Angeles / Orange County Area
- Fountain Valley
- Fullerton
- Irvine
- Norwalk
- Signal Hill
- Yorba Linda
Local 853
San Francisco Bay Area
- Fairfield
- Hayward
- Redwood City
- San Jose
- San Jose – Almaden Expressway
- South San Francisco
- South San Francisco (second warehouse)
- Sunnyvale
Local 986
Inland Los Angeles Area
- Alhambra
- Burbank
- Inglewood
- Northridge
- Oxnard
- Santa Clarita
Maryland
Local 570
Baltimore Area
- Beltsville
- Gaithersburg
- Glen Burnie
- White Marsh
Michigan
Local 243
Detroit Area
- Romulus (MDO)Distribution Center
New York & New Jersey
Local 210
New York / New Jersey Area
- Brick
- Commack
- Edison
- Hackensack
- Hazlet
- Holbrook
- Melville
- New Rochelle
- Wayne
- Westbury
Virginia
Local 592
Richmond Area
- Richmond (Glen Allen)
Local 822
Norfolk Area
- Norfolk
Washington State
Local 174
Washington State
- Kent (MDO)Distribution Center
- SumnerDistribution Center
Don’t See Your Costco Listed?Not every Costco warehouse is unionized yet. If you work at a Costco that isn’t Teamster-represented, find out how to change that.
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