Costco Part-Time Jobs in Diamond Bar, CA — Apply Today
As of September 2026, there are 9 Costco part-time openings in Diamond Bar, CA. Local pay ranges from $18 to $26/hr. Listings are updated daily — benefits start Day 1 for most positions.
Costco
Just Posted:Loss Prevention Clerk-Part Time(Contract,Diamond Bar)
Diamond Bar, CA
$20 - $24
Costco
Immediate Opening:Security(Gig)
Diamond Bar, CA
$19 - $25
Costco
Immediate Opening:Store Associate(Gig)
Diamond Bar, CA
$18 - $24
Costco
Diamond Bar Flexible Role:Facilities Maintenance
Diamond Bar, CA
$18 - $25
Costco
(Diamond Bar)Part-Time:Careers
Diamond Bar, CA
$18 - $24
Costco
Student Friendly:Retail Associate(Diamond Bar)
Diamond Bar, CA
$20 - $23
Costco
[Just Posted] Cake Decorator-Diamond Bar(PT)
Diamond Bar, CA
$19 - $22
Costco
Team Member needed in Diamond Bar(Apply Now)
Diamond Bar, CA
$18 - $24
Costco
[New] Morning Shift-Diamond Bar(PT)
Diamond Bar, CA
$19 - $24
Costco Part-Time Jobs in Diamond Bar — FAQ
How many Costco part-time jobs are open in Diamond Bar, CA?
There are currently 9+ Costco part-time positions in Diamond Bar, CA. New part-time roles are added regularly — check this page for the latest openings.
How much do Costco part-time jobs pay in Diamond Bar?
Costco part-time pay in Diamond Bar varies by specific role and shift. Most positions include shift differentials for nights and weekends, plus benefits starting Day 1. Browse the listings above to see pay details for each opening.
Does Costco hire for part-time positions with no experience in Diamond Bar?
Many Costco part-time positions in Diamond Bar require no prior experience. Costco provides paid training for new hires. Check individual listings for specific requirements.
How do I apply for Costco part-time jobs in Diamond Bar?
Browse the 9+ part-time listings above, click on any position for full details including pay and shift times, then follow the application link. Most Costco positions have a 15–30 minute online application.
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Last updated: September 17, 2026