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Party Size
For 2
Thu, 2/22
11:00 PM
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Booked 25 times today

Union An American Bistro

969 reviews
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$30 and under
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Contemporary American
Top Tags:
  • Good for a Date
  • Casual
  • Happy Hour
The cozy, upbeat UNION is the epitome of a friendly neighborhood restaurant, inviting locals and visitors to enjoy the modern American culinary experience. UNION offers creative, seasonal menus served in a warm and comfortable setting in the heart of downtown Castle Rock, using quality ingredients from around the block and around the world.

Dining Style
Casual Elegant
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Contemporary American, Tapas / Small Plates, Comfort Food
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Hours of operation
Sunday & Monday CLOSED.
Tuesday, Wednesday & Thursday: 11:30 am - 9:00 pm
Friday & Saturday: 11:30 am - 10:00 pm
***We are closed most holidays. Please check our website specials & events section for closures.

Happy Hour: Tuesday - Saturday 2:00 pm - 6:00 pm***In our Bar & Upper Patio Only. Reservations not accepted for happy hour.
Tuesday - BUCKETS OF BEER 5 for $15.
Wine Wednesday - 1/2 price bottles of Wine all day.
Martini Saturday - All UNION Martinis are $6 all day.

Please note reservations not accepted for happy hour.
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Phone number
(303) 688-8159
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Payment options
AMEX, Discover, MasterCard, Visa
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Dress code
Casual Dress
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Executive chef
Kim Heideman
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Private party facilities
The restaurant is available for private parties up to 80 people or cocktail parties up to 100 people.
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Private party contact
Dennis Dickey : (303) 688-8159
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Let us bring UNION To you. For your next Celebration, Corporate Event, Or Boxed Lunch. Whatever kind of gathering, Our Creative Team will pull it off in style. The restaurant is available for private parties up to 80 people or cocktail parties up to 100 people.
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Cross street
South Street
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Parking details
Parking lot & on street parking surrounding the restaurant.
Public lot across the street East of restaurant.
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Special events & promotions
***We are closed most holidays. Please check our website specials & events section for closures.
Happy Hour Tuesday - Saturday 2-6 pm in the Bar & Upper Patio Only. Reservations not accepted for happy hour.

Tuesday - BUCKETS OF BEER 5 for $15.
Wine Wednesday - All bottles & cans of wine are 1/2 Price All Day.
Saturday - UNION Martinis $6.
Bar Dining, Bar/Lounge, Beer, Cocktails, Fireplace, Full Bar, Happy Hour, Non-Smoking, Outdoor dining, Wheelchair Access, Wine
What 969 People Are Saying
Overall ratings and reviews
Reviews can only be made by diners who have eaten at this restaurant
4.6  based on recent ratings
Noise · Moderate
93% of people would recommend it to a friend
  • 5
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TraciP (Denver)
5.0  Dined a day ago

Terrific little gem in Castle Rock, just a few minutes from 1-25 and plenty of parking. The food was terrific, highly recommend a reservation, it was really busy for a Weds lunch. They split checks and large meals so we could have a taste of everything. The house salad was amazing (light and simple with polenta croutons) and a nice addition to sharing a large plate. Save room for dessert, the coconut cream pie was out of this world, we will go back! Thanks

Foodiegirl (Orlando)
5.0  Dined 5 days ago

Food was delicious! Two people in our party had the salmon and said it was delicious, and my husband and I both had the Meatloaf. I had a side of Brussel sprouts and those were really tasty. The only complaint we had was that the cocktails were super expensive and small. So we would not order alcoholic drinks if we went back again, but instead go somewhere else for drinks afterwards.

OpenTable Diner 
5.0  Dined 5 days ago

We were 5 mins early for our reservation, our table was waiting and we were seated immediately. Service was prompt and friendly; food was great and reasonably priced. This place has been very popular for years, so on a weekend night it is packed and a bit noisy. If you want a quiet, intimate spot, this isn't that. However, since you can see all the other patrons in the room, you can play "celebrity look alike " to pass the time. A man near us looked like a younger Tim Roth - fun stuff!
I recommend and will return.

Red2 (London)
5.0  Dined 5 days ago

Overall really good. Loved all the food with the exception of The poutine (cold & bland) and the chocolate peanut butter bite (overly sweet). Love the $6 martini.

5.0  Dined 6 days ago

Great Food, service, atmosphere with a small bistro feel. Being from Kansas City, the added bonus of having Boulevard Beer on tap is worth the trip back.

ErinMcM (Minneapolis)
5.0  Dined 7 days ago

Favorite non-chain place in Castle Rock! Great food, great service and it’s close by!

vipTron (Denver)
5.0  Dined on February 10, 2018

Delicious as always. I love taking friends from out of town here. They always love it!

OpenTable Diner (San Francisco)
3.0  Dined on February 9, 2018

We started out with the Thai flatbread with chicken and that was very good. Our waiter forgot to take our dinner order so we sat for awhile after the appitizer was gone. My friend and I had the burgers with added ingredients. Our burgers were over-done but still tasty. Our waiter was very inattentive - I saw him just standing leaning against the wall quite a few timeswhich was irritating while we waited for our order to be taken, plates cleared, drinkd offer/ refill ect. I would go back but would not sit in his section again.

Lori (Denver)
5.0  Dined on February 3, 2018

We are never disappointed with the food or service at our favorite local restaurant. The menu changes often enough to keep our interest but is consistent enough to always keep us satisfied. On occasion we will stop in for happy hour and make it a meal tasting several of their wonderful bar tapas.

FoodEColorado (Denver)
4.0  Dined on February 3, 2018

This place really needs to consider updating the interior. Big paint chips coming off walls. It’s very outdated. But the food was amazing. The waitress was blah, not very personable, or super on top of things, but she was adequate.