Cosmo’s Pizza
Boulder's go-to for authentic, New York-style pizza. Famous for massive slices, budget-friendly prices, and a must-try spicy ranch.
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Cosmo’s Pizza
Highlights
Must-see attractions
Boulder's go-to for authentic, New York-style pizza. Famous for massive slices, budget-friendly prices, and a must-try spicy ranch.
"The best pizza place in Colorado, they went above and beyond to make our day so amazing!"
Lunch Special Deal
Grab the lunch special: two large slices and a drink for a great deal, available before 5 PM.
Add Toppings for 50 Cents
Enhance your slice by adding extra toppings behind the glass for just 50 cents each.
Quick Facts
Cuisine
Pizza
Price
$
Highlights
Discover the most iconic attractions and experiences
Generously Sized Slices
Experience massive New York-style pizza slices that are a meal in themselves, perfect for satisfying any appetite.
Famous Spicy Ranch Dressing
Don't miss out on the legendary spicy ranch dressing, a must-have accompaniment that elevates the pizza experience.
Affordable & Authentic NY-Style Pizza
Enjoy authentic New York-style pizza with a crispy crust and generous toppings at budget-friendly prices.
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Insider Tips
from TikTok, Instagram & Reddit
Lunch Special Deal
Grab the lunch special: two large slices and a drink for a great deal, available before 5 PM.
Add Toppings for 50 Cents
Enhance your slice by adding extra toppings behind the glass for just 50 cents each.
Avoid Peak Hours
Visit during off-peak times to minimize wait times for your order or delivery.
Check Your Order
Always double-check your order before leaving to ensure accuracy.
Tips
from all over the internet
Lunch Special Deal
Grab the lunch special: two large slices and a drink for a great deal, available before 5 PM.
Add Toppings for 50 Cents
Enhance your slice by adding extra toppings behind the glass for just 50 cents each.
Avoid Peak Hours
Visit during off-peak times to minimize wait times for your order or delivery.
Check Your Order
Always double-check your order before leaving to ensure accuracy.
What Travellers Say
Reviews Summary
Cosmo's Pizza is lauded for its massive, authentic New York-style slices and incredibly reasonable prices, making it a local favorite, especially for late-night cravings. While the pizza itself is consistently praised, some reviewers note that the ambiance isn't ideal for dining in, suggesting takeout or delivery as preferred options.
"We just wanted to let everyone know this is the best pizza place in Colorado. Yesterday, they went above and beyond to make our day so amazing! We’ve been enjoying cosmos for well over 15 years and decided to make them apart of a special day. They made us a special pizza for our gender reveal! Pizza was 10/10 and made our day so wonderful! Cant recommend enough!"
Emily Majors
"Super super generously sized slices and prices! The folks here are all friendly and helpful. Good music too, a fun chill environment to grab a bite. The pizza also tastes fantastic."
Sara
"Velvety chocolate moose and weekly specials for two slices and a drink before 5 PM
All meat slice was better than Whole Foods or NYC pizza.No napkins for order to
Go but warmed pizza!"
The Globaltrotter
What People Like
What People Dislike
Frequently Asked Questions
Cosmo's is renowned for its huge, authentic New York-style pizza slices, quick service, and budget-friendly prices. Their famous spicy ranch dressing is also a major draw.
Yes, the lunch special offers two large slices and a drink before 5 PM. You can also add extra toppings to slices behind the glass for only 50 cents each.
While the pizza is consistently great, Cosmo's is primarily a take-out and delivery operation. The ambiance isn't ideal for dining in, so grabbing a slice to go is recommended.
To avoid long waits, it's best to avoid peak hours. Cosmo's is also a popular late-night spot, open until 2:30 a.m. on weekdays.
Yes, Cosmo's offers gluten-free crust options for their pizzas.
Absolutely! You can customize your pizza by adding various toppings, and you can even add extra toppings to slices for a small fee.
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Best of Boulder 2022 — Food
Over the past few years, we’ve all become delivery experts as dozens of local eateries newly offered to bring everything from chicken korma to doughnuts to your doorstep. Despite all the food choices our readers now have, they didn’t hesitate to name Cosmo’s Pizza as Boulder’s go-to for food delivery. While the pizzeria had to close its 20-year-old spot at 1325 Broadway on the Hill, Cosmo’s’ many other locations guarantee the timely delivery of your hot Supreme, Greek Veggie, Hawaiian or Meat Lovers pies.
The Best Pizza Places in Boulder
A local favorite since 2000, Cosmo’s Pizza has become synonymous with delicious pizza in Boulder. Known for their generous toppings, New York-style slices, and extensive selection of specialty pies, Cosmo’s offers something for everyone. Whether you’re craving a classic pepperoni slice or feeling adventurous with their famous “Cosmic Karma” pizza loaded with fresh veggies, feta cheese, and a secret sauce, Cosmo’s is a go-to spot for satisfying pizza cravings.
The Best Restaurants on University Hill
Cosmo’s serves up hand-tossed pizza in three different locations in Boulder, including the most happening spot, on The Hill. There’s a dinner rush and then there’s a late-night rush at Cosmos, where you can order a classic or lightly crazier pizza (like BBQ chicken), or build your own. Cosmo’s offers gluten-free crust options or calzones for people who really, really like their gluten.
The Best Boulder Restaurants for Students on a Budget
Among the CU Boulder student body, Cosmo’s (which has six locations between Denver and Fort Collins) is widely known to be the go-to catering option for clubs, classes, gatherings and any other event you can think of — and for good reason. It serves quality pizza at a good price, period. The slices are massive, with crispy dough and a great sauce-to-cheese ratio.
29 Things to Eat in Boulder, Colorado Before You Die
Nothing tastes better at 1am than pizza, and no pizza tastes better at 1am than Cosmo’s. With multiple locations in Boulder and a thin crust a gooey cheese, Cosmo’s Pizza is loved by students and Boulder locals alike. #SpoonTip: Always get the spicy ranch.
University of Colorado-Boulder: Best Late Night Food Spots
College students on a budget will love a large pizza slice from Cosmo’s Pizza. If you’re a night owl even during the weekdays, Cosmo’s Pizza is the restaurant to visit for a late night snack since it’s open till 2:30 a.m.
Dining Guide and Restaurants in Boulder
Cosmo’s Pizza 1325 Broadway, #108, 303-447-1133; 659 30th St., 303-447-3278; 3117 28th St., 303-442-3278; cosmospizza.com. Casual and fast pizza joint with famous spicy range. Open daily for lunch, dinner and late night.
Boulder Restaurants | Top 33 in 2025
Known for its handmade pizza and signature spicy ranch, Cosmo’s Pizza has been a staple among the restaurants Boulder locals love since 2001. Every pizza is hand-tossed and cooked to perfection in the deck oven.
A list of Boulder restaurants open for delivery, curbside pickup and takeout meals during coronavirus shutdowns
Cosmo’s Pizza, 1325 Broadway; 303-447-3278; 659 30th St.; 303-447-3278; 3117 28th St.; 303-442-3278; delivery and curbside pickup available 11 a.m.-2:30 a.m.
Social
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