Dunkin'

4.0
305 reviews
Decked Out Lattes
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Business Details

375 East Putnam Avenue, Cos Cob, CT
06807, United States
(203) 869-7454
https://www.dunkindonuts.com
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About

Coffee ShopDonut ShopBreakfast RestaurantBakeryBagel ShopFast Food RestaurantTake Out Restaurant
Dunkin’ is America’s favorite all-day, everyday stop for coffee, espresso, breakfast sandwiches and donuts. The world’s leading baked goods and coffee chain, Dunkin’ serves more than 3 million customers each day. With 50+ varieties of donuts and dozens of premium beverages, there is always something to satisfy your craving. Dunkin’ is proud to serve Cos Cob, CT for all breakfast and snacking needs. Stop by today to try a classic favorite or a new featured product!

Details

  • Dine-inAvailable
  • DeliveryAvailable
  • TakeoutAvailable
  • Credit cardAvailable

Location

Dunkin'
375 East Putnam Avenue, Cos Cob, CT
06807, United States

Hours

Reviews

4.0
305 reviews
5 stars
160
4 stars
61
3 stars
43
2 stars
7
1 star
34

What are people saying?

AI-generated from recent customer reviews

Customer Service

Many customers reported poor customer service, with rude staff and lack of attention to orders being common complaints.

Cleanliness

The store was frequently noted for its cleanliness, with many customers appreciating the well-maintained environment.

Order Accuracy

Several reviews highlighted issues with order accuracy, particularly with mobile orders being incorrect or taking too long to prepare.

Staff Attitude

There were mixed reviews regarding staff attitude, with some customers praising friendly service while others reported rudeness and lack of empathy.

Product Availability

Customers expressed frustration over frequently unavailable menu items, impacting their overall experience.
  • AA
    Adriana
    Oct 28, 2025
    2.0
    I ordered and paid for an iced tea and they only realized they were out of it when they began to pour. How do they not know when it is so low that it needs to be replenished? They were also out of the cheddar bagel twists that I was looking forward to. This was not midnight, it was 4 in the afternoon! The attitude was not very sympathetic. It didn't seem to matter to them that BOTH things I came in for were unavailable.
  • DJ
    David Jefferson
    Oct 20, 2025
    5.0
    Great, clean store in a great location. Prices are on par with Grenwich, tho.
  • AV
    Audra Vinci
    Aug 28, 2025
    5.0
    Go here most days! Great Service and if you want you can dine in! Very Clean!
  • DS
    dangtu sherpa
    Jul 18, 2025
    1.0
    I ordered my coffee and food but when I was there to pick up there is only coffee was ready. I told her . Hey, where is my food? The arguing with me did you order food? I said yes I ordered with the mobile app you can check with my order number and my name. You can see it clearly she’s mad at me. OK then just wait. She make me wait. 15 minute just to grab food. It doesn’t make sense to order with mobile app. They are so rude. They don’t even wanna make my sandwich they keep talking each other. They don’t pay attention. That’s worst experience ever. Hopefully this kind experience will not have other people as well. !
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Frequently Asked Questions About Dunkin'

What are the operating hours of Dunkin' in Cos Cob, CT?

Dunkin' in Cos Cob, CT is open daily from 5:00 AM to 10:00 PM.

What types of meals are served at this Dunkin' location?

This Dunkin' serves breakfast, lunch, and brunch.