Costco Jobs in Diamond Bar, CA — Open Positions
As of September 2026, there are 20+ open Costco positions in Diamond Bar, CA. Current pay ranges from $18 to $26 per hour. Top hiring areas include Part Time, Weekend and Grocery. New roles are posted daily — listings on this page are verified and updated regularly.
Costco
Just Posted:Loss Prevention Clerk-Part Time(Contract,Diamond Bar)
Diamond Bar, CA
$20 - $24
Costco
New:Part Time Order Picker(Contract,Diamond Bar)
Diamond Bar, CA
$19 - $23
Costco
Maintenance Worker-Part Time(Contract)|Diamond Bar
Diamond Bar, CA
$18 - $23
Costco
Immediate Opening:Part Time(Gig)
Diamond Bar, CA
$18 - $23
Costco
Recent Job:Tire Center-Part Time(Contract,Diamond Bar)
Diamond Bar, CA
$18 - $25
Costco
Immediate Opening:Security(Gig)
Diamond Bar, CA
$19 - $25
Costco
Immediate Opening:Store Associate(Gig)
Diamond Bar, CA
$18 - $24
Costco
Entry Food Service Worker-Part Time(Flexible)|Diamond Bar
Diamond Bar, CA
$18 - $24
Costco
Immediate Opening:Student(Gig)
Diamond Bar, CA
$19 - $24
Costco
Diamond Bar Flexible Role:Facilities Maintenance
Diamond Bar, CA
$18 - $25
Costco
Hiring in Diamond Bar:Weekend(Part-Time)
Diamond Bar, CA
$19 - $22
Costco
(Diamond Bar)Part-Time:Careers
Diamond Bar, CA
$18 - $24
Costco Jobs in Diamond Bar — FAQ
How many Costco jobs are available in Diamond Bar, CA right now?
There are currently 20+ open Costco positions in Diamond Bar, CA. These include warehouse associates, delivery drivers, fulfillment center workers, sortation center staff, and management roles. New jobs are added daily.
How much does Costco pay in Diamond Bar?
Costco pay in Diamond Bar varies by role: Warehouse associates earn $15–$22/hr, delivery drivers $18–$25/hr, CDL truck drivers $25–$35/hr, and area managers $50K–$90K+/year. Night and weekend shifts include $0.50–$3.00/hr extra.
Does Costco hire with no experience in Diamond Bar?
Yes. Most Costco warehouse, fulfillment center, and sortation center positions in Diamond Bar require no prior experience. Costco provides paid training for new hires. Delivery driver positions require a valid driver's license but no commercial license (CDL) for most routes.
What are Costco's shifts and hours in Diamond Bar?
Costco offers multiple shift options in Diamond Bar: day shift (6 AM–4:30 PM), evening/twilight shift (1 PM–11:30 PM), night/overnight shift (6 PM–6 AM), and weekend-only schedules (Fri–Sun or Sat–Mon). Part-time shifts of 4–5 hours are also available. Overnight and weekend shifts pay extra shift differentials.
What benefits does Costco offer employees in Diamond Bar?
Costco employees in Diamond Bar receive benefits starting Day 1, including: health, dental, and vision insurance; 401(k) with company match; paid time off; up to 20 weeks paid parental leave; free career training through Career Choice program (covers tuition up to $5,250/year); employee discount; and weekly pay.
How much is Costco take-home pay after taxes in Diamond Bar?
Your Costco take-home pay in Diamond Bar depends on your hourly rate, hours worked, and state tax rate. For example, a warehouse worker earning $18/hr in a no-tax state like Texas takes home about $614/week, while in California it's closer to $548/week after state tax.
Is Costco hiring immediately in Diamond Bar?
Yes, many Costco positions in Diamond Bar are hiring immediately with start dates within 1–2 weeks of applying. Some fulfillment center and delivery station roles offer same-week start dates. Browse the 20+ listings above and apply directly.
Last updated: September 17, 2026