Mark Friday, October 23: Denver Halloween Costume Party & Mingle is a 21+ costume party at Number Thirty Eight in Denver, CO, from 7 PM to 10 PM. The date lands one week before Halloween, and tickets are listed at free to $5. Come dressed up: costumes are encouraged. Guests must be 21 or older. Denver has 22 other Halloween events within three days of this one.
Date & Time
Friday, October 23 · 7 PM – 10 PM
UTC-06:00
Location
Number Thirty Eight | Denver, CO
TicketsUSD 0.00 to USD 5.00
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Know before you go
When
Friday, October 23, 2026, 7 PM to 10 PM (one week before Halloween)
Where
Number Thirty Eight, 3560 Chestnut Place, Denver, United States
Tickets
free to $5
Length
About 3 hours
Ages
21+ only
Type
Halloween Costume Party
Dress code
Costumes encouraged
Details
Wear your spooky fun costume and make new friends at Number Thirty Eight in RiNo. Costume contest with prizes! 21+. About this Event
🎃 Wear your spooky fun Halloween costume and join us at Number Thirty Eight on Friday October 23 at 7 PM. 👻
This event is in collaboration with the Make New Friends Meetup Group.
Costumes not required but strongly encouraged. 🧛 🏆 It's a costume contest! Vote for the best, scariest, couples, and funniest costume. We'll have some fun prizes to award the winners.
Whether you're new to the area, a longtime resident, or just visiting, join us 👋 to make new friends. All ages 21+ welcome. 🏷️ Look for people with name tags and glow stick bracelets.
We will have a designated area inside for our event (look to the comments on the day of the event on how to find us). Please feel free to mingle around the venue and head outside too.
🪩 Although the event has an end time, many people stick around to continue socializing or join us if we bar hop to the next spot. Please drink responsibly. Hosts are not responsible for the actions of attendees.
IMPORTANT: This is a community-led social event. By joining, you acknowledge that you're responsible for your own choices and safety. Please participate at your own comfort level, respect your own limits, and look out for each other with kindness. See you there!
FAQs: • What is this event? An opportunity to meet new people and make new friends in a welcoming environment. (And to show off your spooky cool costume!) 💀 • Do people really make friends? Yes! We have many stories of people hanging out, building friendships, meeting for coffee or drinks, and going adventuring. • What is Number Thirty Eight? A spacious popular indoor/ outdoor venue with food, games, live music, and drinks. • Where do I park? There is street parking and usually you can find a spot within a block or two of the venue. We recommend taking public transportation or rideshare if you can.
Event Location
Number Thirty Eight, 3560 Chestnut Place, Denver, United States
