Costco Pharmacy Illinois hours
Costco Pharmacy stores in Illinois follow the chain-wide hours above as a default. Individual locations adjust based on local market demand — urban-core stores in Chicago typically open earlier and stay open later than suburban stores. The official Costco Pharmacy store locator publishes the exact hours for each Illinois location and is the source of truth for any specific store.
Costco Pharmacy holiday hours in Illinois
Costco Pharmacy Illinois locations follow the national holiday calendar. Costco does not operate any 24-hour locations. Pharmacy counters close earlier than the warehouse and are dark all day Sunday at most clubs.
Costco Pharmacy cities in Illinois
Costco Member Prescription Program in Illinois
The Costco Member Prescription Program (CMPP) gives Costco members discounted cash prices on a wide list of generics and brand medications when paying without insurance. There is no separate fee — eligibility is included with any Costco membership. The same program applies at every Costco Pharmacy Illinois location. Read the full Costco Member Prescription Program guide →