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Dunkin' Zero
Brand Certified

Dunkin'

3.3
(445 reviews)

Business Details

368 Route 12, Groton, CT
06340, United States
(860) 445-0329
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 Groton, CT for all breakfast and snacking needs. Stop by today to try a classic favorite or a new featured product!

Details

  • Dine-inNot available
  • DeliveryAvailable
  • TakeoutAvailable
  • Credit cardAvailable

Location

Dunkin'
368 Route 12, Groton, CT
06340, United States

Hours

Monday4:00 AM - 9:00 PM
Tuesday4:00 AM - 9:00 PM
Wednesday4:00 AM - 9:00 PM
Thursday4:00 AM - 9:00 PM
Friday4:00 AM - 9:00 PM
Saturday4:00 AM - 9:00 PM
Sunday4:00 AM - 9:00 PM

Reviews

3.3
445 reviews
5 stars
170
4 stars
74
3 stars
52
2 stars
38
1 star
111
  • JM
    Jack Maliszewski
    Apr 14, 2026
    1.0
    Consistantly bad. Dunkin Go. 3 different time and day visits. And 3 wrong orders. The 3rd, most recent, visit the window server was adamant about making the drink in question. The server was so confident. They were WRONG. The sticker said black tea. The tea bag was in the water. WRONG. It was a coffee. With a line forming, I wasn't going to argue nor did I have enough time for a confrontation. If you go, I'd suggest you check your order and request corrections right there at the window. Perhaps the staff will pay attention to the orders.
  • AM
    Ashley Marek
    Apr 9, 2026
    1.0
    The employees are nice enough but more often than not they give you whatever donuts they feel like giving you instead of what was ordered. It’s starting to become a waste of money trying to order from here. I have no problem choosing replacements if they’d give me the option, but they don’t even let you know something is unavailable before choosing a replacement for you. EDIT: If I could give 0 stars at this point I would. There are 2 competent employees and if neither of them is there this location doesn’t function. I sat in the drive thru waiting to order, saying “hello” multiple times because no one came to the speaker. I normally mobile order but today mobile ordering was down for this location. I tried to order at the window and they would not allow it. I requested the manager and the employees that were there both said she had left for the day. Either they were lying or this woman can magically pop into existence from somewhere else because she suddenly was there. Absolute GARBAGE service unless the 2 competent employees (neither of whom are the manager) are there. Nothing but attitude and nastiness from the young employees. Would not recommend this location at this point to anyone. I’d rather go out of my way to find a dunkin that can handle making a single coffee and putting donuts in a box without wondering how the employees manage to hold down jobs.
  • JD
    Jaelyn Dostie
    Apr 2, 2026
    1.0
    I mobile order almost every time I go. If I order at the window it takes forever for someone to help you. They just look at you until they feel like coming over. I mobile ordered and picked up 10 minutes later today. They were still making my coffee when I got there and completely messed it up. Tastes bitter, old, and oily.
  • DE
    David Everett
    Jan 31, 2026
    1.0
    Honestly this is the worst dunkin donuts. Somehow they manage to make cold brew taste acidic and burnt (Im pretty sure they just put the old regular coffee from the previous day into the cold brew for the next day). They routinely mess up orders and have a very slow drive through, especially considering they do not have to worry about customers in the store. Go to the dunkin donuts by EB, they are way better.
  • AS
    Alexandria Santora
    Jan 28, 2026
    1.0
    literally the worst dunkin ive ever been to. The people suck

Frequently Asked Questions About Dunkin'

What are the regular opening hours for Dunkin' Groton, CT?

Dunkin' in Groton, CT is open daily from 4:00 AM to 9:00 PM.

Does this Dunkin' location offer delivery and curbside pickup?

Yes, this Dunkin' location offers both delivery and curbside pickup services.

Brand Certified Facts from Dunkin'

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Certified April 26, 2026Yext Knowledge Graph
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