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Union Bistro

Certificate of Excellence
££ - £££
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3 Wilcox St, Castle Rock, CO 80104-3300 (South Street)
+1 303-688-8159
11:30 - 21:00
Closed now
All hours
Tue - Thu 11:30 - 21:00
Fri - Sat 11:30 - 22:00
More Info
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236 Reviews from our TripAdvisor Community

Traveller rating
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Time of year
Showing 235: English reviews
Green Valley, Arizona
Level Contributor
218 reviews
100 restaurant reviews
common_n_restaurant_reviews_1bd8 98 helpful votes
4 of 5 bubbles Reviewed yesterday NEW

First time here for dinner visiting Castle Rock. We had lunch here several years ago on another trip. Lively, fun atmosphere. We sat outside by the fire until our table was ready. It was the night of the Castle Rock Star lighting for the holidays so the restaurant was busy. We had made reservations and were seated within 10 minutes... More 

Thank jeanb1876
Castle Rock, Colorado
Level Contributor
5 reviews
common_n_restaurant_reviews_1bd8 1 helpful vote
5 of 5 bubbles Reviewed 5 days ago NEW

We ordered lunch and got it to go and that is the best lunch and the price is reasonable. Thanks again

Thank bj261
Greenwood Village, Colorado
Level Contributor
88 reviews
30 restaurant reviews
common_n_restaurant_reviews_1bd8 13 helpful votes
4 of 5 bubbles Reviewed 2 weeks ago via mobile

The food has been consistently good each time I've visited. The martini was excellent and was 1/2 price on Saturday! We sat on the patio last weekend and loved being by the fire pit.

Thank 19SandyD19
Denver, Colorado
Level Contributor
12 reviews
9 restaurant reviews
common_n_restaurant_reviews_1bd8 1 helpful vote
5 of 5 bubbles Reviewed 3 weeks ago

Union Bistro always exceeds expectations with their gourmet menu and relaxing, casual atmosphere. I especially love the happy hour, but get there early, due to its popularity with the locals, seating goes fast. I would rate this as one of the top restaurants in Castle Rock!

Thank paula_denver
Williston, North Dakota
Level Contributor
25 reviews
20 restaurant reviews
common_n_restaurant_reviews_1bd8 4 helpful votes
2 of 5 bubbles Reviewed 3 weeks ago

When entering the building we were impressed, kind of dark, however, clean and staff seemed friendly enough. IT was the food that destroyed the experience.....terrible. We tried a flatbread with steak and Gyros tacos. The meat had flavor that was difficult to eat, the sauce was very sour. It was clear to the server that we did not like the... More 

Thank Bigwillysallon
Castle Rock
Level Contributor
22 reviews
15 restaurant reviews
common_n_restaurant_reviews_1bd8 2 helpful votes
4 of 5 bubbles Reviewed 4 weeks ago

If you are looking for a quiet and romantic evening with that special someone skip the Union Bistro. We recently visited the Union for a friendly evening with old friends that lived in our town. With a group of eight we thoroughly enjoyed a delightful evening meal and conversation in an active and lively atmosphere that was complimented by great... More 

Thank Robert H
Boulder, CO
Level Contributor
304 reviews
171 restaurant reviews
common_n_restaurant_reviews_1bd8 132 helpful votes
4 of 5 bubbles Reviewed 4 weeks ago

The service is outstanding. Fast, efficient and friendly. The entrees are original and interesting, without being pretentious. All the food we had was well prepared and enjoyed. Perhaps one pet peeve is worth noting - if there are 3 diners (or 4 or 5 for that matter), please do not take the empty plate when others are still eating. It... More 

Thank elkabelka
Castle Rock, Colorado
Level Contributor
8 reviews
common_n_restaurant_reviews_1bd8 1 helpful vote
5 of 5 bubbles Reviewed 1 November 2016

What a great restaurant in Castle Rock. Good food and great service. This restaurant never disappoints.

Thank Jennifer H
Washington State
Level Contributor
111 reviews
49 restaurant reviews
common_n_restaurant_reviews_1bd8 85 helpful votes
5 of 5 bubbles Reviewed 30 October 2016

Loved this place for a gathering of friends. Service was fast and friendly and the food didn't disappoint. Their pumpkin risotto, the evening's special, was just terrific. It's a busy place so call ahead for a reservation.

Thank ScissorsAndPens
Castle Rock, Colorado
Level Contributor
453 reviews
241 restaurant reviews
common_n_restaurant_reviews_1bd8 102 helpful votes
4 of 5 bubbles Reviewed 25 October 2016

My husband and I have our favorite happy hour places in town, but it was nice to try one we haven't been to in a while. We were pleasantly surprised--the outdoor patio was lovely, even in October (weather permitting!). We had some wine and tried out the honey sriracha shaved brussels, blackened fish tacos and truffle parmesan tots. All were... More 

Thank Louise M

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Restaurant Details

Rating summary
  • Food
    4.5 of 5 bubbles
    4.5 of 5 bubbles
  • Value
    4 of 5 bubbles
    4 of 5 bubbles
Average prices
US$3 - US$30
Lunch, Dinner
Restaurant features
Television, Wheelchair Accessible, Takeout, Reservations, Outdoor Seating, Seating, Waitstaff, Parking Available, Street Parking, Free Off-Street Parking, Serves Alcohol, Full Bar, Wine and Beer, Accepts American Express, Accepts Mastercard, Accepts Visa, Accepts Discover, Highchairs Available, Free Wifi
Dining Style
Casual Elegant
Good for
Special Occasion Dining, Local cuisine, Child-friendly, Bar Scene
Open Hours
11:30 - 21:00
11:30 - 21:00
11:30 - 21:00
11:30 - 22:00
11:30 - 22:00
Location and Contact Information
  • Address: 3 Wilcox St, Castle Rock, CO 80104-3300
    (South Street)
  • Location: United States  >  Colorado (CO)  >  Castle Rock
  • Phone Number: +1 303-688-8159
Modern doesn't need to mean uptight. At Union, you'll find the freshest culinary ideas in a comfortable setting. Our menu is a creative collection of American inspired classics with Global influence. Inspired dishes using the freshest ingredients from around the block and around the world. Join us for the best happy hour in Castle Rock. Tuesday through Saturday from 2 - 6 PM in the bar and on the upper patio. Reservations not accepted for Happy Hour. "Community" is more than just a word to us. Nothing's better than sharing a great meal with family and friends. Come and enjoy the neighborhood comfort of our dining room, our spacious bar, the outdoor patio or our famous community table. We look forward to seeing you soon. Join Us!

Questions & Answers

Here's what previous visitors have asked, with answers from representatives of Union Bistro and other visitors
1 question
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Port St Lucie, Fl
11 months ago

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Questions? Get answers from Union Bistro staff and past visitors.
Posting guidelines
Typical questions asked:
  • Do you have gluten-free options?
  • Is there a dress code?
  • Do you allow dogs on the outdoor patio?