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Dunkin' Zero
Brand Certified

Dunkin'

4.0
(312 reviews)

Business Details

(203) 869-7454
https://www.dunkindonuts.com

About

Coffee ShopDonut ShopBreakfast RestaurantBakeryBagel ShopFast Food RestaurantTake Out RestaurantDunkin'
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
312 reviews
5 stars
164
4 stars
61
3 stars
43
2 stars
8
1 star
36

What are people saying?

AI-generated from recent customer reviews

Customer Service

Numerous reviews highlighted poor customer service, with staff being rude, unhelpful, and often ignoring customers.

Order Accuracy

Many customers reported frequent mistakes with their orders, particularly with mobile orders, leading to frustration.

Cleanliness

Some reviews praised the cleanliness of the store and bathrooms, while others noted issues with hygiene practices among staff.

Staff Attitude

Several customers mentioned a negative attitude from staff, including instances of rudeness and lack of empathy.

Product Availability

Customers expressed disappointment over frequently unavailable menu items, impacting their overall experience.
  • SN
    Seth Numan
    Feb 14, 2026
    1.0
    if i could give zero i would, awful customer service, got everything in my order wrong, the only thing they got right they made wrong, why even have pictures of the food up if ur gonna hand me slop….
  • GF
    Gregory Fosch
    Jan 25, 2026
    2.0
    Horrific service. Maybe one out of the 5 people working speaks any English. Have to repeat my order 5 times and it's still wrong. They ignore you while laughing with each other. They don't know I speak Spanish and they are talking badly about customers right in front of them. The woman in front of me said "bagel with cream cheese" and the guy taking the order had to ask the lady who worked there to translate. Horrible horrible service.
  • RJ
    Rodwell Johnson
    Jan 21, 2026
    1.0
    Very rude customer service, do not go here if you want to change your order, they are angry if you decide to change your order., especially the shift manager. Do not go here, stars bucks is it
  • JV
    Joe Vallejo
    Dec 18, 2025
    5.0
    It's Dunkin
  • 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.

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.

Brand Certified Facts from Dunkin'

This information is certified by Dunkin' and published from the brand's official system of record. Data is distributed through an enterprise-grade knowledge management platform. Learn more about our data sources
Certified March 01, 2026Yext Knowledge Graph
  • Address
  • Categories
  • Geo coordinates
  • Legal business name
  • Hours of operation
  • Phone number
  • Official website
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