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 Waterbury, CT for all breakfast and snacking needs. Stop by today to try a classic favorite or a new featured product!
Customers reported inconsistent service, with some praising friendly staff while others noted poor attitudes and mistakes with orders.
Order Accuracy
Many reviews highlighted frequent issues with incorrect orders, including wrong items and poorly made drinks.
Cleanliness
The location was noted for being clean, although some customers reported unsanitary conditions with food and drinks.
Speed of Service
Several customers expressed frustration with long wait times, particularly in the drive-thru, even during off-peak hours.
Product Quality
Feedback on food quality was mixed, with some enjoying the coffee and donuts while others complained about stale or improperly cooked items.
ZB
Zeshan Bhi
6 days ago
4.0
Good
GC
Gati Cruz
Oct 14, 2025
5.0
Omg they are so nice,service is fast no waiting
BF
B F
Oct 1, 2025
1.0
I used to enjoy coming here. Ever since they lost the nice guy at the window on morning shift, it's gone down hill. The new girl has an attitude, the outside of the drinks are always covered in whatever ingredients they were using to make the drinks, and the food quantity has been wrong multiple times.
LL
Lizbeth
Aug 27, 2025
4.0
Dunkin' Donuts is a great spot for quick coffee, breakfast, and sweet treats. Their coffee menu is extensive, offering everything from classic brewed coffee to iced lattes and cold brews. The donuts are fresh, soft, and come in a variety of flavors, with seasonal options that keep the menu interesting. Prices are reasonable, and service is typically fast, making it ideal for busy mornings.
What are the operating hours of Dunkin' at 21 Union St, Waterbury, CT?
Dunkin' at 21 Union St, Waterbury, CT is open 24 hours a day, 7 days a week.
Does this Dunkin' location offer delivery and pickup services?
Yes, this Dunkin' offers both delivery and curbside pickup services.
What payment methods are accepted at this Dunkin'?
This Dunkin' accepts both debit and credit card payments.
What types of meals are served at this Dunkin'?
Dunkin' serves breakfast, lunch, and brunch meals.
Does this Dunkin' location have a drive-thru?
Yes, the Dunkin' at 21 Union St has a drive-thru available for customers.
What are some popular seasonal beverages available at Dunkin'?
During the holiday season, Dunkin' offers the Cookie Butter Cloud Latte, Peppermint Mocha, Toasted White Chocolate Signature Latte, and the Berry Sangria Refresher.
Where can I find nearby gas stations when visiting Dunkin' at 21 Union St?
Nearby gas stations include Gulf and Waterbury Gulf, which can be convenient for customers refueling before or after their visit to Dunkin'.
Are there any health facilities close to this Dunkin' location?
Yes, Saint Mary's Hospital and Saint Mary's Emergency Department are nearby and can be good places to visit before or after enjoying a meal at Dunkin'.
What accommodations are available near Dunkin' for travelers?
Courtyard By Marriott and Josephine Towers are nearby accommodation options for travelers visiting the area around Dunkin'.
How can customers use the Dunkin' app to enhance their experience at this location?
Customers can order ahead via the Dunkin' mobile app for a fast grab-and-go experience and access exclusive offers, including holiday menu items.