Union Square Donuts at Assembly Row: A Massachusetts Favorite for Fresh, Unique Treats

Union Square Donuts Introduce

Hello, Massachusetts donut enthusiasts! When the craving for a truly exceptional sweet treat hits, local residents know that not all donut shops are created equal. Nestled within the vibrant Assembly Row in Somerville, Union Square Donuts stands out as a beacon for those seeking more than just a simple glazed ring. This isn't just a place to grab a quick breakfast; it's a destination for culinary delight, offering a wide variety of expertly crafted donuts that push the boundaries of flavor and freshness. This article will explore what makes Union Square Donuts a cherished local gem, a must-visit for anyone in the greater Boston area looking for an unforgettable donut experience.

Union Square Donuts has cultivated a reputation far beyond its Somerville roots, drawing visitors from across Massachusetts and even international travelers. Their commitment to quality ingredients, innovative flavor combinations, and a welcoming atmosphere has solidified their standing as a premier donut purveyor. Whether you're a long-time fan or a curious newcomer, understanding the unique offerings and inviting environment of Union Square Donuts will undoubtedly add it to your list of favorite local haunts.

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Location and Accessibility

Union Square Donuts is strategically located at 457 Grand Union Blvd, Somerville, MA 02145, USA, within the popular Assembly Row development. This prime location in Somerville offers excellent accessibility for both local residents and those commuting from other parts of Massachusetts. Assembly Row is a dynamic, pedestrian-friendly area known for its shopping, dining, and entertainment, making Union Square Donuts a convenient stop during a day out.

Accessibility to Assembly Row is one of its major advantages. For those driving, there are ample parking garages and lots available throughout Assembly Row, making it easy to find a spot, especially for a quick pickup. Public transportation is also a breeze, with the MBTA Orange Line's Assembly Row station just steps away from the donut shop. This direct subway access means that individuals from Boston, Cambridge, and other surrounding communities can easily reach Union Square Donuts without the need for a car. The walkability of Assembly Row further enhances the experience, allowing customers to comfortably stroll to the shop and enjoy the lively atmosphere.

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Services Offered

Union Square Donuts provides a delightful array of services centered around their core product: exceptional donuts. Their offerings go beyond just standard fare, aiming for a premium and satisfying experience. Here's what you can expect:

Wide Variety of Gourmet Donuts: Union Square Donuts is renowned for its extensive selection of unique and creative donut flavors. These flavors are often seasonal or rotating, ensuring there's always something new and exciting to try, in addition to their beloved staples.
Incredibly Fresh Products: Customer reviews consistently highlight the freshness of their donuts, with many describing them as "incredibly fresh" upon consumption, emphasizing that "every bite is a treat."
High-Quality Coffee: To complement their sweet treats, Union Square Donuts offers "great coffee." This makes it an ideal spot for a morning pick-me-up or an afternoon treat, pairing perfectly with their rich donuts.
Dine-in Seating: Unlike some grab-and-go donut spots, this location at Assembly Row offers "seating available," providing a comfortable environment for customers to enjoy their donuts and coffee on-site, whether alone or with company.
Friendly and Welcoming Service: The staff at Union Square Donuts are consistently praised for being "warm and welcoming" and "always patient if you have questions." This commitment to excellent customer service enhances the overall experience.
Options for Dietary Needs: While not explicitly mentioned in the provided reviews, Union Square Donuts is known for often providing options like vegan donuts, and sometimes gluten-free options, catering to a broader customer base with specific dietary considerations. It's advisable to check their current offerings for the most up-to-date information on these specialized items.
Takeaway and Online Ordering (Likely): While reviews focus on in-store experience, like most modern donut shops, they likely offer easy takeaway options and potentially online ordering for convenience, especially for larger orders or pre-orders.

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Features / Highlights

Union Square Donuts distinguishes itself with several key features and highlights that make it a standout choice for donut lovers in Massachusetts:

Exceptional Freshness: A recurring theme in customer feedback is the outstanding freshness of the donuts. Patrons consistently rave about how "incredibly fresh" the donuts are, emphasizing that this quality significantly enhances the eating experience. This commitment to freshness sets them apart from many competitors.
Innovative and Diverse Flavor Profiles: Union Square Donuts is celebrated for its wide and creative variety of donut flavors. They move beyond traditional options, offering unique combinations that make each visit an adventure. This dedication to culinary creativity keeps customers returning to discover new favorites.
Superior Coffee Pairing: The availability of "great coffee" is a significant highlight. A perfect cup of coffee is the ideal complement to a fresh donut, and Union Square Donuts ensures this pairing is of high quality, elevating the overall breakfast or snack experience.
Comfortable In-Store Experience: The presence of "seating available" at the Assembly Row location is a notable feature, providing a relaxed and inviting atmosphere where customers can sit down, savor their treats, and enjoy the ambiance, rather than just grabbing and going.
Outstanding Customer Service: The staff's "warm and welcoming" and "patient" demeanor is a consistent highlight. Positive interactions with friendly and helpful employees greatly enhance the customer experience and foster a welcoming environment.
High Recommendation Rate: The fact that customers, including those visiting from out of state, "highly encourage anyone to check it out" and "can confidently say that Union Square is one of my favorites" speaks volumes about the overall satisfaction and quality of the establishment.
Prime Location within Assembly Row: Being located in Assembly Row adds significant value. It makes the shop easily accessible via public transport and provides a vibrant surrounding environment for visitors to explore before or after their donut run.

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Contact Information

For those eager to experience the delights of Union Square Donuts at Assembly Row, here's how to get in touch:

Address: 457 Grand Union Blvd, Somerville, MA 02145, USA

Phone: (617) 209-2257

It's always a good idea to check their social media or website for the most current operating hours, daily flavor specials, or any specific holiday schedules before planning your visit.

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Conclusion: Why Union Square Donuts is Suitable for Locals

For residents across Massachusetts, Union Square Donuts at Assembly Row in Somerville is more than just a place to buy a donut; it's an essential local experience. Its suitability for locals stems from a combination of outstanding product quality, a convenient location, and a welcoming atmosphere that fosters repeat visits. The primary draw is undoubtedly the donuts themselves – described as "incredibly fresh" and offering a "wide variety of flavors," ensuring that every bite is a delightful treat. This commitment to freshness and creative innovation sets them apart from many chain or smaller, less adventurous donut shops, making it a true destination for gourmet donut lovers.

The strategic placement within Assembly Row is another significant advantage for local users. With easy access via the MBTA Orange Line and ample parking, it's a hassle-free trip for anyone in the greater Boston area. This accessibility, combined with the presence of comfortable seating, transforms it from a mere grab-and-go spot into a pleasant place to relax and enjoy a coffee and donut, whether for a quick break or a leisurely catch-up with friends. Furthermore, the consistently positive feedback regarding the "warm and welcoming" staff highlights a dedication to excellent customer service, ensuring that every visit is a pleasant one. For locals seeking a reliable source of high-quality, inventive donuts and great coffee, served in an inviting setting, Union Square Donuts at Assembly Row is an unequivocally suitable and highly recommended choice that promises not to disappoint.

Union Square Donuts Menu

4. Coffee
Cold Brew US$5.09
A blend of high quality medium to dark coffees from Central America and Africa, we taste notes of clementine, nougat, burnt sugar, with a clean, crisp finish. Our friends at Atomic Coffee Roasters in Salem, MA have crafted a brew we are honored to sell.
Cosmo Blend - Whole Bean US$17.60
A natural Brazil lays the foundation with body and sweetness, a washed Costa Rican from Tarrazú adds structure and clarity, and an Ethiopian Yirgacheffe brings bright, citrusy lift. The result? A medium-light roast with notes of ripe plum, cranberry, and marzipan—juicy, layered, and easy to love.
Black Velvet - Whole Bean US$17.60
Black Velvet is our smoothest dark roast, crafted to deliver deep, rich flavor without the bitterness you’ll find in most coffees this bold. During roasting we extend the Maillard phase to highlight burnt sugar, toasted cocoa, and malted milk balls. Inspired by Salem, it’s a little mysterious, a little magical—and about to be your new daily dark roast.
Drip Coffee: Black Velvet Roast US$3.69
Our Union Square Donuts drip coffee blend is a deliciously dark roast developed by Atomic Coffee Roasters of Salem, MA; We taste notes of burnt sugar, graham cracker, and malted milk balls. This is a coffee that sips dreamy and smooth on your palate.

Take-And-Bakes
Classic Brown Butter Cinnamon Rolls: Take-And-Bake (4-Pack) US$18.70
The USD Cinnamon Rolls you love now come frozen so you can bake and serve them fresh in the comfort of your home! We transformed our brioche donut dough into rolls of delicious spirals filled with buttery brown sugar and cinnamon. Each order comes with 4 frozen cinnamon rolls and 1 container of Brown Butter Cream Cheese frosting.
Brioche Pretzel Bites With Pub Cheese (Take & Bake) US$19.80
Each order includes 8 frozen buttery brioche pretzel bites topped with everything seasoning and a tin of crave-worthy pub cheese.

2. Bakery
PB&C Cinny Roll US$6.05
Our classic cinnamon roll topped with peanut butter glaze and a creamy milk chocolate drizzle.
Classic Cinnamon Roll US$5.50
We transformed our classic brioche donut dough into rolls of delicious spirals filled with buttery brown sugar and cinnamon. Each roll is then topped with brown butter cream cheese frosting.

1. Donuts
Vietnamese Coffee US$4.69
Our brioche donut is covered in a rich, creamy glaze made from condensed milk and espresso.
Apple Cider Cake Donut US$4.69
Our Apple Cider Cake Donut is infused with a warming mixture of cinnamon and nutmeg spices and the crisp flavors of locally pressed apple cider from our friends at Carlson Orchard. After a perfect golden fry our cider cake donut is tossed in our homemade cinnamon clove sugar. Enjoy the change of seasons with a bite or dozen of these classic New England favorites.
Sea Salt Whiskey Caramel US$4.69
With each bite of this brioche donut, enjoy the rich caramel glaze with a subtle hint of whisky. We sprinkle a few flakes of sea salt to finish off this flavorful classic. Cheers to donuts and whisky.
Butter Pecan US$4.79
Dipped in a sweet butter glaze and then covered with toasted candied pecans. Now your favorite ice cream, cookie, and cake flavor is wrapped up in one salty-sweet donut delight!
Cherry Hibiscus (Vegan) US$4.69
A love letter to the ultimate classic, but now VEGAN! We dip our vegan brioche dough into a sweet glaze with tart cherries and notes of floral hibiscus.
Raspberry Jam Filled US$5.35
Filled with our homemade raspberry jam and then lightly tossed in sugar. This classic is a perfect way to get your daily fruit intake while eating a delicious donut.
Donut Holes - Dozen US$5.79
Indulge in our delectable brioche donut holes, each one lovingly covered in a sweet deco glaze. Satisfy your cravings with a dozen of these irresistible treats in every order!
Salted Brown Butter Cruller US$5.35
With each bite of our pâte à choux dough, enjoy the spongy, moist, melt-in-your mouth interior texture contrasted by the crispy exterior of our French Cruller dipped in our famous brown butter glaze and topped with chunky Maldon sea salt
Dubai Chocolate Bar US$7.45
Our signature Dubai Chocolate Bar inspired by the viral TikTok treat! We fill our brioche bar with creamy pistachio filling, toasted kataifi pastry, and dip it in smooth dark chocolate.
Milk Chocolate Rainbow Sprinkles US$4.79
Enjoy our brioche donut dipped in creamy milk chocolate glaze and topped with rainbow sprinkles! Nothing better than this classic combo!
Boston Cream US$5.45
We fill our brioche dough with a rich and creamy vanilla pastry cream and glaze the top with a decadent dark chocolate. Voted New England’s #1 donut by Zagat!
Raspberry Cheesecake US$4.79
Our creamy raspberry cheesecake donut will remind you of the best NY cheesecake you've ever had! Covered in a thick cheesecake glaze and drizzled with our homemade fresh raspberry sauce.
Belgian Dark Chocolate US$4.79
Our delicious dark chocolate glaze melts perfectly on top of our buttery brioche donut dough. Classics are classics for a reason!
Sugar Raised US$4.40
If you are looking for a donut that celebrates our delicious buttery brioche dough, this classic is for you. We roll the donut in superfine sugar and that is it! Enjoy
Cinnamon Sugar (Vegan) US$4.69
Hand tossed in a mixture of cinnamon and sugar, this donut is everything you hoped for and more. Enjoy a bite of happiness.
Peach Cobbler US$5.35
Our brioche dough is stuffed with luscious peach filling, dipped in our dreamy vanilla ice cream glaze, and topped with pieces of buttery streusel.
Ginger Lime US$4.79
A zesty blend of fresh ginger and tangy lime, creating a donut reminiscent of Ocean Ave Pops!
Vanilla With Rainbow Sprinkles (Vegan) US$4.69
Our delicious vegan donut is dipped in sweet vanilla glaze and then covered in rainbow sprinkles! Our glaze is made with oat milk so it's vegan-friendly! Sprinkled with happiness!
Maple Bacon US$5.25
We double dip our brioche donut in our maple syrup glaze and top with thick-cut smokey bacon. With each bite, enjoy the perfect combination of sweet and salty. There is nothing sweeter than pure New Hampshire maple syrup from Fuller’s Sugarhouse.
Honey Glazed US$4.69
A classic flavor that features a sweet and sticky honey glaze. It doesn't get more New England then this donut.
Brown Butter Hazelnut Crunch US$5.25
Our brioche donut is dipped in a rich brown butter glaze topped with salted toasted crushed hazelnuts. Close your eyes and savor each bite of this delicious donut.
S'mores US$5.35
Our version of the campfire treat! Our signature brioche dough is filled with milk chocolate, topped with fluff, toasted mini marshmallows, and sprinkled with graham cracker crumble. Impossible to have just one, you’ll be wanting S’more!

10. Beverages to Share
Joe To Go (96 Ounces) US$31.90
Each Joe to Go contains enough coffee for 12 eight-ounce cups. Comes with cream, sugar, and cups.
Hot Chocolate To Go (96 Oz) US$38.50
Each Hot Chocolate to Go contains enough hot chocolate for 12 eight-ounce cups. Comes with cups and lids. Made with whole milk only.
Atomic Cold Brew Growler US$28.60
64oz of our cold brew in a growler. Optional: cream, sugar, napkins, and cups.

6. Craft Beverages & Espresso Bar
Cup Of Milk US$3.85
Enjoy a 16 oz cup of cold whole milk!
Iced Chocolate US$4.35
Our signature cocoa mix combined with your choice of milk and swirled with ice for a cold, tasty treat!
Latte US$5.35
A double shot of espresso with steamed milk and thin layer of microfoam.
Caramel Coconut Latte US$6.55
House made caramel and coconut syrup blended together with your choice of milk!
Hot Tea US$3.69
Red Eye - ICED US$6.35
We top off Atomic's bold cold brew coffee with a double shot of espresso.
Cafe Mocha US$5.79
House-made creamy hot chocolate with a double shot of espresso
Honey Cinnamon Latte US$5.79
Atomic's Black Velvet espresso mixed with your choice of milk, sweetened with honey, and generously topped with ground cinnamon.
Blueberry Maple Latte US$6.55
Blueberry and maple syrup swirled together with two shots of espresso, ice, and your choice of milk.
Arnold Palmer US$5.05
A classic Arnold Palmer is the perfect summer drink to keep you cool while you enjoy your donuts. Half black tea, half lemonade; Perfectly tart & sweet!
Berry Lemonade US$6.35
Fresh homemade lemonade with strawberry puree and blueberry syrup. Summer perfected.
Hot Chocolate US$4.25
Union Square Donuts own unique cocoa blend stirred with creamy steamed milk.
Matcha Latte US$5.50
Our matcha latte available hot or iced, made with MEM Tea premium grade matcha powder!
Maple Latte US$6.05
A double shot of espresso, local maple syrup and steamed milk: The perfect New England drink!
Chai Latte US$5.50
Housemade chai tea concentrate blended with steamed milk: Lightly spicy and sweet. Hot or iced.
Espresso US$3.59
A double shot of our signature Atomic Coffee Roasters "Dark Velvet" espresso
Vanilla Cream Cold Brew US$6.69
Atomic's classic cold brew topped with our delicious Vanilla Cream Cold Foam!
Babyccino US$3.59
Your choice of milk steamed to perfection. Enjoy as is or add one of our syrup flavors!
Macchiato (HOT ONLY) US$4.15
A double shot of espresso topped with a "kiss" of steamed milk.
Peaflower Blossom Iced Tea US$5.05
Try our new seasonal herbal iced tea, the Peaflower Blossom! With notes of lemongrass, jasmine petals, and elderberry this tea is floral and refreshing. We add a small amount of lemon juice and simply syrup to give the Peaflower Blossom its signature purple color.
Cappuccino (HOT ONLY) US$4.69
A double shot of espresso with steamed milk and topped off with milk foam.
Red Eye - HOT US$5.95
Batch-brewed hot drip coffee topped with a double shot of espresso.
Dubai Chocolate Latte US$6.55
Inspired by the sensational Dubai Chocolate Bar, this specialty latte features our house espresso brewed over pistachio syrup and wrapped in a mocha swirl. Order hot or cold with your choice of milk!
Black Iced Tea US$5.05
Classic, refreshing, and crisp, black iced tea is back for the season! Unsweetened & caffeinated.
Cortado (HOT ONLY) US$4.40
A double shot of espresso and topped with 2oz steamed milk. 4.5oz.
Americano US$4.79
Espresso with hot water
Lemonade US$5.05
Pucker up, sweet tart! This cup of sweet and tart housemade lemonade served over ice packs a punch.
Cafe Au Lait US$3.85
Batch-brewed hot drip coffee finished with steamed milk.

Union Square Donuts Details

Service options
Delivery
In-store pick-up
In-store shopping
Takeaway
Dine-in

Popular for
Solo dining

Accessibility
Wheelchair-accessible entrance
Wheelchair-accessible seating
Wheelchair-accessible toilet

Offerings
Coffee

Dining options
Breakfast
Dessert
Table service

Amenities
Gender-neutral toilets
Toilet

Atmosphere
Casual

Crowd
Family friendly
LGBTQ+ friendly
Transgender safe space

Planning
Quick visit

Payments
Credit cards
Debit cards
NFC mobile payments
Credit cards

Parking
Free parking lot
Paid street parking

Union Square Donuts Photos

Union Square Donuts Location

Union Square Donuts

Massachusetts Middlesex County Somerville Assembly Square Grand Union Boulevard

457 Grand Union Blvd, Somerville, MA 02145, USA

Union Square Donuts Reviews

An average rating of ★4.2 from 174 user reviews.

priceveganboston creamhazelnutfillingdozensweethappydairysea salt

★ 5★ 4★ 3★ 2★ 1

Union Square Donuts offers a wide variety of treats for the sweet tooth out there. I tried a couple different ones and they all tasted good - although by the time I tried them they weren't so "fresh". Their coffee was great. Service was good and the place has seating available.
March 08 · Yuri
I recently visited Union Square Donuts at Assembly Row and I can’t recommend this place enough! As a Canadian visiting Boston, this was my second time here, and I’m already looking forward to my next visit.The donuts are incredibly fresh, and the variety of flavors is delightful. Every bite is a treat! The service is also outstanding; the staff is warm and welcoming and always patient if you have questionsHaving tried many donut shops, I can confidently say that Union Square is one of my favorites. I highly encourage anyone to check it out—you won’t be disappointed!
October 01 · Yannick XXX
I used to work in a sub shop in the early 80 and I remember this place in union square. Fast forward my wife bought few donuts from this place few days ago. Let me tell this, I had the blueberry donut. It was one the best donuts I ever had. I can still tasted in my mouth and I can’t wait to go back and try more donuts. Thank you very much.
May 30 · Tahany Sadeddin
Love your doughnuts. But my last visit on 7/13/25 I was incredibly disappointed in the overall cleanliness. Poor air quality. Didnt smell clean and the the restroom was horrific. Poop on the seat. And they were not busy, so the bathrooms should always be clean for customers. So based upon your rude reply I will gladly take my busy elsewhere. And you clearly ignored the rest of my comment Your staff members reflect your managing of this location. The place wasn't clean and the staff should be on top of that. You can't handle a negative review. Do better next time. And I'm glad I left this review because poop on a toilet seat is unacceptable. And your staff should be monitoring the cleanliness of the restrooms for it's customers.😉 It's just common sense,
July 22 · Emily Honeycutt
Loved the cream filling, loved the bottom half of donut. Top half was bit bitter. Maybe it’s an acquired taste. Donuts are priced little on higher side. Would love to try different donut but cannot come frequently because of price.
June 09 · kunal jiwane