Costco Part-Time Jobs in Diamond Bar, CA — Apply Today

As of November 2026, there are 58 Costco part-time openings in Diamond Bar, CA. Local pay ranges from $16 to $34/hr. Listings are updated daily — benefits start Day 1 for most positions.

Costco

Diamond Bar Needs:Warehouse Associate(Part-Time)

Diamond Bar, CA

$18 - $24

Costco

Diamond Bar Job:Member Service Representative(No Exp Req*)

Diamond Bar, CA

$18 - $23

Costco

Sushi Chef(Part-Time)@ Costco-Diamond Bar

Diamond Bar, CA

$21 - $29

Costco

Earn Extra Cash:Administrative(Diamond Bar)

Diamond Bar, CA

$18 - $23

Costco

Cashier Assistant - Part Time

Diamond Bar, CA

$16 - $20

Costco

Diamond Bar Needs:Cart Attendant(Part-Time)

Diamond Bar, CA

$18 - $21

Costco

Cashier - Part Time

Diamond Bar, CA

$19 - $23

Costco

Part Time Stocker-Diamond Bar,CA | Hiring

Diamond Bar, CA

$18 - $23

Costco

Just Posted:Loss Prevention Clerk-Part Time(Contract,Diamond Bar)

Diamond Bar, CA

$20 - $24

Costco

Hearing Aid Center Jobs (Part Time)

Diamond Bar, CA

$20 - $29

Costco

Diamond Bar Flexible Role:Facilities Maintenance

Diamond Bar, CA

$18 - $25

Costco

Corporate Jobs - Part Time

Diamond Bar, CA

$16 - $20

Costco Part-Time Jobs in Diamond Bar — FAQ

How many Costco part-time jobs are open in Diamond Bar, CA?
There are currently 58+ 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 58+ 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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Other Costco Jobs in Diamond Bar

Costco Weekend Jobs in Diamond Bar

13 open positions

Costco Grocery & Fresh Jobs in Diamond Bar

9 open positions

Costco Delivery Driver Jobs in Diamond Bar

6 open positions

Costco Fulfillment Center Jobs in Diamond Bar

6 open positions

Costco Overnight Jobs in Diamond Bar

3 open positions

Costco CDL Driver Jobs in Diamond Bar

2 open positions

Costco Pharmacy Jobs in Diamond Bar

2 open positions

Costco Customer Service Jobs in Diamond Bar

1 open positions

Last updated: November 02, 2026