Why is Costco Korea Closed on Sundays?
If you are an expat living in South Korea or a traveler planning a massive grocery haul, you might be shocked to roll up to a Costco on a Sunday afternoon only to find the massive sliding doors completely shut and the parking lot empty.
In the US or Europe, weekends are prime shopping days for wholesale clubs. So, why is Costco Korea closed on Sundays?
Before you pack your giant insulated shopping bags, here is everything you need to know about South Korea’s mandatory retail closure laws, how to check the schedule, and how to avoid the dreaded “closed door” heartbreak.
The Legal Reason: South Korea’s Distribution Industry Development Act
The reason Costco Korea closes on weekends isn’t because they want a break—it is actually mandated by Korean law.
Under a regulation known as the Distribution Industry Development Act (유통산업발전법), the Korean government requires large-scale hypermarkets and wholesale clubs to close two days every month. For the vast majority of locations, these mandatory rest days fall on the second and fourth Sunday of the month.
Why was this law passed?
- Protecting Traditional Markets: The primary goal is to protect small, mom-and-pop shops and traditional Korean street markets (Sijang, 시장) from being overwhelmed by global giants and domestic mega-marts.
- Worker Welfare: The law ensures that retail employees at hypermarkets get guaranteed rest days on weekends to spend time with their families.
The Golden Rule: The 2nd and 4th Sunday Formula
For most Costco warehouses in Korea—including popular locations like Uijeongbu, Yangjae, Sangbong, and Songdo—the doors will strictly close on:
- The Second Sunday of the month
- The Fourth Sunday of the month
💡 Quick Tip: If a month happens to have five Sundays, Costco will still only close on the 2nd and 4th ones. The 1st, 3rd, and 5th Sundays are perfectly safe for shopping!
⚠️ The Exceptions: Some Costco Branches Close on Wednesdays!
Here is where many expats get confused. Not every city in Korea enforces the Sunday rule. Some local municipalities have adjusted the law to allow hypermarkets to close on weekdays instead, keeping them open all weekend long.
If you desperately need to shop on a 2nd or 4th Sunday, you can make a road trip to these specific branches that close on the second and fourth Wednesday instead:
- Ilsan Branch
- Daegu Branch & Daegu Innovation City Branch
- Gumi Branch
- Ulsan Branch (Closes on the 2nd Wednesday and 4th Sunday—always double-check local schedules!)
🛠️ How to Survive Costco Closures: Choi’s Pro-Tips
1. Check the Official App or Website First
Before you drive out, open the official Costco Korea app or visit their website. They always post a banner at the top displaying the exact closure dates for the current month.
2. Shop on Friday Nights or Saturdays
If you want to beat the chaotic Saturday afternoon crowds, the absolute best alternative is Friday evening after 7:00 PM. The shelves are fully stocked for the weekend, and the lines are significantly shorter.
3. Keep an Eye on National Holidays
In addition to the bi-weekly Sunday closures, Costco Korea closes early (usually around 7:00 PM) on the eve of major Korean holidays and remains completely closed on the holiday itself. Mark your calendar for:
- Lunar New Year (Seollal)
- Chuseok (Korean Thanksgiving)
- New Year’s Day (January 1st)
Summary Checklist for Expats
| Costco Location Type | Closure Days | Shopping Strategy |
| Standard (Uijeongbu, Seoul, etc.) | 2nd & 4th Sunday | Shop on Friday night or 1st/3rd Sunday |
| Exceptions (Ilsan, Daegu, Gumi) | 2nd & 4th Wednesday | Safe to shop any Sunday of the month |
| Major Holidays | Seollal, Chuseok, Jan 1st | Stock up at least 3 days in advance |
Knowing this simple local rule will save you time, gas, and a lot of frustration. Happy shopping, and don’t forget your membership card!
💬 What about you?
For more essential tips on navigating local Korean rules, payment hacks, and Costco hidden discounts, bookmark choitip.com!