Costco Part-Time Jobs in Ontario, CA — Open Positions

As of October 2026, there are 247 Costco part-time openings in Ontario, CA. Local pay ranges from $15 to $35/hr. Listings are updated daily — benefits start Day 1 for most positions.

Costco

Ontario Part-Time Job:Gas Station-Part Time | Part Time Job

Ontario, CA

$15 - $20

Costco

Part Time Stock Clerk

Ontario, CA

$20 - $23

Costco

Ontario Part-time Role:Part Time Seasonal

Ontario, CA

$18 - $23

Costco

Cashier Assistant - Part Time

Ontario, CA

$19 - $23

Costco

Student Friendly:Optical Assistant(Ontario)

Ontario, CA

$20 - $23

Costco

Now Hiring Ontario:Optical(PT)

Ontario, CA

$17 - $22

Costco

Hiring in Ontario:Retail Associate(Part-Time)

Ontario, CA

$20 - $23

Costco

Ontario Part Time Stocker(Part-time)-Costco | Hiring

Ontario, CA

$18 - $23

Costco

Part Time Costco Now Hiring

Ontario, CA

$20 - $26

Costco

Flexible Gig:Part Time Stocking & Warehouse(Ontario) | Hiring

Ontario, CA

$19 - $24

Costco

Part Time Cashier Jobs

Ontario, CA

$16 - $20

Costco

Part Time Stocking Associate

Ontario, CA

$22 - $27

Costco Part-Time Jobs in Ontario — FAQ

How many Costco part-time jobs are open in Ontario, CA?
There are currently 247+ Costco part-time positions in Ontario, CA. New part-time roles are added regularly — check this page for the latest openings.
How much do Costco part-time jobs pay in Ontario?
Costco part-time pay in Ontario 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 Ontario?
Many Costco part-time positions in Ontario 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 Ontario?
Browse the 247+ 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.

Costco Part-Time Jobs in Other Cities

Costco Part-Time Jobs in Springfield

1237 open positions

Costco Part-Time Jobs in Columbus

911 open positions

Costco Part-Time Jobs in Lakewood

864 open positions

Costco Part-Time Jobs in Columbia

858 open positions

Costco Part-Time Jobs in Bloomington

802 open positions

Costco Part-Time Jobs in Greenville

780 open positions

Costco Part-Time Jobs in Albany

741 open positions

Costco Part-Time Jobs in Franklin

720 open positions

Costco Part-Time Jobs in Auburn

719 open positions

Costco Part-Time Jobs in Long Beach

689 open positions

Other Costco Jobs in Ontario

Costco Weekend Jobs in Ontario

52 open positions

Costco Grocery & Fresh Jobs in Ontario

47 open positions

Costco Fulfillment Center Jobs in Ontario

21 open positions

Costco Delivery Driver Jobs in Ontario

17 open positions

Costco Overnight Jobs in Ontario

15 open positions

Costco CDL Driver Jobs in Ontario

10 open positions

Costco Pharmacy Jobs in Ontario

8 open positions

Costco Customer Service Jobs in Ontario

3 open positions

Last updated: October 30, 2026