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Party Size
For 2
Date
Today
Time
7:00 PM
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Booked 7 times today

Union An American Bistro

4.5
1002 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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Cuisines
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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Catering
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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Neighborhood
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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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Entertainment
none
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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.
Additional
Bar Dining, Bar/Lounge, Beer, Cocktails, Fireplace, Full Bar, Happy Hour, Non-Smoking, Outdoor dining, Wheelchair Access, Wine
What 1002 People Are Saying
Overall ratings and reviews
Reviews can only be made by diners who have eaten at this restaurant
4.5based on recent ratings
4.5
food
4.5
service
4.2
ambience
4.2
value
Noise · Moderate
90% of people would recommend it to a friend
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5.0Dined 3 days ago

Excellent service and food was wonderful. Love the drink specials. Jambalaya with crispy lobster tail was fabulous.

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5.0Dined 3 days ago

Union is a Castle Rock staple. You cant yo wrong with any food or drinks!

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3.0Dined 3 days ago

We have been to the Union Bistro several times.

We love the food but the noise level is horrendous. We could not hold a conversation with our friends during the entire dinner!

Not sure we will dine there again

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4.0Dined 3 days ago

This was the first time I've eaten here, even thought I've been here many times for Happy Hour (which is great by the way). Our waitress was great, she made some recommendations that we all loved. The kitchen did mess up on the toppings on 2 of our burgers, but quickly corrected and made it right. Food was delicious and will definitely recommend this place to others. But not too many, because I don't want it to get too crowded ;-)

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5.0Dined 3 days ago

Nice wine list, great food, and... Oh! That peanut butter bite!

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4.0Dined 5 days ago

Perfect booth in the bar/happy hour area so nice and dark, intimate and didn’t feel as loud as usual in the open area. Love ordering off the happy hour list and sharing for dinner! Perfect date night.

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5.0Dined 5 days ago

We all very much enjoyed our meal. The steak salad was delicious!

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2.0Dined 5 days ago

Service was outstanding. However, my Thai flatbread small plate had cheddar cheese??? Since I can't do dairy, Thai is usually a safe bet, not here.

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5.0Dined 6 days ago

Great as always

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5.0Dined 7 days ago

Haven’t been here in awhile but what a pleasant surprise to return
We had the mussels and sausage appetizer which was delicious
The toasted bread was a great addition
Also had a chicken ceasar salad that was wonderful
My husband had the pastrami sandwich
Also amazing
Our server, Sydney was delightful
We we not wait so long to return

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5.0Dined on April 8, 2018

We love coming here, especially on Saturdays - the drink specials are fantastic! I would never come without a reservation though. We also love the food...try the crunchy broccoli!

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3.0Dined on April 3, 2018

Restaurant was clean and orderly, reception was warm and friendly so the beginning was good. We were seated in the room adjacent to the bar area and it was a bit noisy as it was full for lunch. Menu was good and we saw a lot of salads being served and inquired with the next table about the quality and the response was delicious. Will return soon to try the salads.

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5.0Dined on April 3, 2018

We had a business lunch at the Union Bistro on a weekday. The service was very friendly and prompt. The food was good, hot and delivered all at the same time. I would highly recommend this restaurant. It got a little noisy by the time we left at 1:30 pm.

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3.0Dined on April 1, 2018

I would not go back for dinner. I would go back for a happy hour and maybe appetizers. I had the salmon with the mashed cauliflower and it was COLD! My hubby had the burger and it was good but just another burger. For the price, the quality was not good due to the temperature it was served. Drinks were just okay. Service was decent. I may go back for a happy hour if I am in the area but I won't be back for dinner.

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5.0Dined on March 24, 2018

Excellent diverse food choices and service!
However the noise level was, indeed energetic, while seated inside!

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5.0Dined on March 24, 2018

Great food, great atmosphere and great service! Between the four of us we had a different types of food and they were all delicious. Staff was helpful and friendly and they took care of us right away. My husband's pork chop was big and juicy, my fish tacos were very flavorful and everything was very tasty.

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4.0Dined on March 23, 2018

This is a consistently good restaurant. Good staff.

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5.0Dined on March 21, 2018

Good food as always! A great place to meet with friends.

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2.0Dined on March 17, 2018

Loaded tater tots appetizer was a joke. Salad dressing had little flavor. Very loud, had to ask twice for water, no bread provided. Server was nice. 3rd visit here, seems to have gone downhill. Expected better for $80 a person with tip.

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5.0Dined on March 15, 2018

2nd time I’ve been to Bistro - both times were great. 1/2 price wine was awesome and service was good. I’d definitely go back and recommend to friends.

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5.0Dined on March 11, 2018

We hadn’t been to Union for a while and was so happy that the food was as good as we remember! A little loud, bur with it!

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5.0Dined on March 10, 2018

Great atmosphere, great food options and wonderful service!

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5.0Dined on March 10, 2018

Super yummy food! Nice portions. The coconut cream pie is next level— wow!

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3.0Dined on March 10, 2018

Castle Rock does not have a very many good restaurants. Union can cook but know that on Friday night at seven pm you are going to be shouting to be heard. Its not a great date place on Friday's. Our maitre'd wore a t-shirt. We had reservations but had to wait. We had to wade through the bar to get to the packed back room where we were seated next to two children under 5 and their exhausted parents. The food was fine, not great, certainly not $60 great (no drinks) but okay. I learned my lesson, not on the weekend for Union.

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5.0Dined on March 9, 2018

Union is a great place to go for drinks and dinner. The broccoli, polenta fries and brussel sprouts are so very good! The owners are always around making sure their guests are happy! This is our go-to place in Castle Rock!

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4.0Dined on March 8, 2018

The food was good. I had the beef flatbread and two others in our group had a hamburger and the lobster poboy and they also said their entrees were good. We arrived at 12:30 for lunch and the main dining room was full and noisy. Hard to converse and hear in a group of 6. We were celebrating 2 birthdays and our server brought us 2 free birthday desserts-lemon cheese cake and a chocolate cupcake. Both were good. Service was good- server willingly gave us separate checks and divided and added the birthday lunches to each check.

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5.0Dined on March 3, 2018

We've dined at Union several times and always had great food and great service. It can be crowded, especially on Saturday evenings, so make a reservation. The Salmon Salad with shaved Brussel sprouts is outstanding, as is the double pork chop. The filet is prepared in a red wine sauce and was fabulous. We had the spicy, crispy broccoli and as long as you want the extra calories it was fabulous! Saturday evening is 1/2 price martinis and they have an extensive list, might be the reason it is crowded, but an excellent selection and worth the drive. They have a great menu for small plates to share. Simply a gem!

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2.0Dined on March 2, 2018

Food was cold. Very average fot the price.
Service was very friendly along with everyone that worked there. Will not return.

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5.0Dined on March 1, 2018

Restaurant week

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5.0Dined on February 28, 2018

Amazing in every way!!

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5.0Dined on February 28, 2018

So much fun, went for restaurant week and so happy. This is a gem in castle rock, our server Brandon was amazing. We will spend many more evenings here. Thank you Union Bistro...we are fans! Dean And Dean

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5.0Dined on February 23, 2018

Union has a great niche in Castle Rock with happy hour starting at 2:00PM. We had a drink, fish tacos and chicken Caesar salad with a side of brussel sprouts. All very good. Service was excellent.

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5.0Dined on February 21, 2018

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

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5.0Dined on February 18, 2018

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.

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5.0Dined on February 18, 2018

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.

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5.0Dined on February 18, 2018

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.

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5.0Dined on February 17, 2018

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.

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5.0Dined on February 16, 2018

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

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5.0Dined on February 10, 2018

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

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3.0Dined 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.

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