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Dunkin' Zero
Brand Certified

Dunkin'

3.7
(323 reviews)

Business Details

531 Islington St, Portsmouth, NH
03801, United States
(603) 431-7350
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 Portsmouth, NH 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'
531 Islington St, Portsmouth, NH
03801, United States

Hours

Monday5:00 AM - 8:00 PM
Tuesday5:00 AM - 8:00 PM
Wednesday5:00 AM - 8:00 PM
Thursday5:00 AM - 8:00 PM
Friday5:00 AM - 8:00 PM
Saturday5:00 AM - 8:00 PM
Sunday5:00 AM - 8:00 PM

Menu

1 menu · 73 items

Explore offerings from Dunkin' on 531 Islington St in Portsmouth, with popular iced drinks, hot drinks, frozen drinks, and sandwiches & wraps available at this location.

Dunkin' Menu

73 items

Reviews

3.7
323 reviews
5 stars
133
4 stars
74
3 stars
46
2 stars
17
1 star
53
  • JM
    Justin Martin
    Sep 24, 2026
    1.0
    Yet another location where you won't get what you order, not even flavorings in your coffee.......
  • CJ
    Charles A. Reid III, J.D.
    Sep 22, 2026
    1.0
    No public restroom at a Dunkin is crazy. That’s just lazy employees not wanting to clean the bathroom. Can’t let me use the restroom… then you don’t need my business
  • MC
    Mike Cavanaugh
    Aug 26, 2026
    4.0
    Had a great experience here. Great service n good food.
  • LF
    Lisa Flynn-Trefrey
    Aug 25, 2026
    2.0
    Incapable of putting a lid on a cup of coffee correctly.
  • JM
    John Morley
    Aug 23, 2026
    2.0
    The location is horribly placed, with the parking lot too small to accommodate traffic such that vehicles will be out in the street attempting to enter the drive-thru line and vehicles in the line blocking parking spots and making it impossible to move around the lot or park/leave if utilizing parking. Even if ordering ahead to save time, you will still end up waiting 20+ minutes in the drive-thru due to the huge volume of traffic and slow service to match. Lines on the pavement indicating the directions for the flow of traffic are improperly placed, and the whole location overall is just a mess begging for an accident along with the unbearably long wait times. If the lot size were expanded utilizing the large empty space behind the location near the train tracks, and the building itself was enlarged/staff increased to appropriately deal with the number of customers and traffic, this location would immediately become 4-5 stars because of course, America runs on Dunkin’!

Frequently Asked Questions About Dunkin'

What are the operating hours of Dunkin' in Portsmouth, NH?

Dunkin' in Portsmouth, NH is open daily from 5:00 AM to 8:00 PM.

Does this Dunkin' location offer delivery and pickup services?

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

Brand Certified Facts from Dunkin'

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Certified October 11, 2026Yext Knowledge Graph
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