The Massive Comic Book Store In Colorado That Will Bring Out Your Inner Child

Mile High Comics reports an inventory of more than 10 million comics at its 65,000-square-foot Denver warehouse. That number sounds like a typo, but it isn’t.

The building stretches across 65,000 square feet, and 45,000 of them are pure shopping space.

The whole business started with a 13-year-old selling comics by mail from his parents’ basement. That kid grew up and kept going for more than five decades.

I love that a childhood hobby turned into something this enormous.

Today the shelves hold far more than comics. Think statues, action figures, life-size props, vintage toys, and posters stacked everywhere you look.

There’s even a shop cat on duty.

I can’t imagine anyone leaving this Colorado spot without feeling about ten years old again. So how long could you wander before someone has to drag you out?

You Will Need A Plan Before Tackling This Many Comics

Ten million comic books is not a collection. It’s a small mountain range made of paper and ink.

Mile High Comics – Jason Street Mega Store is widely regarded as the largest comic book store in the country. Mile High Comics is often called America’s largest comics dealer, too.

Those titles come from sheer volume, not clever marketing.

Beyond the single issues, the store carries about 300,000 trade paperbacks and hardcovers. That’s enough reading to fill several lifetimes of rainy weekends.

You’ll find new releases, used copies, and true collectible gems spread across the floor.

So how do you approach a place like this? Start with a short list of titles or characters you love.

Then give yourself permission to wander away from that list.

Hunting for one specific back issue can feel like a treasure quest here. With millions of books filed away, your odds of success are better than almost anywhere else.

Staff can help point you toward the right section.

A casual reader can have just as much fun as a serious collector. Grab a stack of something new and see where it leads.

Your future favorite series might be sitting two bins over.

A Basement Hobby Grew Into Something Truly Gigantic

Back in 1969, a 13-year-old named Chuck Rozanski started selling comics by mail. His headquarters?

His parents’ basement in Colorado Springs.

Most kids sell lemonade. Chuck built a comic empire instead, and it kept growing for decades.

The first Mile High Comics retail store opened in Boulder in 1974. By 1977, the company had grown to four stores around the greater Denver area.

That’s a pretty fast climb for someone who started out shipping packages from home.

The Jason Street building came later, and it came with real risk. A lease ended at a smaller 12,000-square-foot rented space.

Chuck took a big leap and bought the 65,000-square-foot warehouse instead.

That gamble paid off for comic fans everywhere. Today, Mile High Comics – Jason Street Mega Store is the company’s only location.

Everything the business built over the years now lives in one giant spot.

I like knowing the whole place traces back to one kid’s passion. It makes every shelf feel a little more personal.

Next time you flip through a back issue, remember where this story began.

Comic History Gets Serious With One Legendary Collection

Collectors still talk about one December in 1977 with something close to awe. That’s when Chuck Rozanski acquired the famous Edgar Church Collection.

This collection is recognized as the largest and highest-quality group of Golden Age comics ever discovered. It included early Marvel and Superman comics.

For comic fans, that’s like finding a pirate chest full of gold coins.

Why were the books in such amazing shape? They had been kept in ideal temperature and humidity conditions for years.

Colorado’s dry climate is also known to be kind to comic book storage.

That fun fact makes the state a surprisingly smart home for paper treasures. Moisture is a comic book’s worst enemy.

Dry mountain air helps pages stay crisp instead of curling or yellowing.

The Church Collection helped put Mile High Comics on the map among serious collectors. Its legacy still shapes how people see the company.

A name tied to that kind of find carries real weight.

You don’t need to own a Golden Age book to appreciate the story. Just knowing it happened makes browsing here feel richer.

History has a funny way of hiding inside cardboard boxes.

Your Childhood Toy Box Has Clearly Moved Here

Comics might be the headliner, but the supporting cast is huge. Toys, statues, and action figures fill shelf after shelf.

The store stocks Pops, posters, models, autographs, and all sorts of memorabilia. Life-size props add a big wow factor around the floor.

It’s hard to walk ten steps without spotting something that sparks a memory.

Anime and manga fans get their own corner of joy, too. The selection reaches well beyond classic superhero titles.

Younger readers who grew up on manga will feel right at home.

Collectors can also stock up on supplies here. Bags, boards, and other gear help protect your new finds.

Smart shoppers grab these before heading home with fresh treasures.

That mix makes Mile High Comics – Jason Street Mega Store fun for nearly every age. Parents can point out the heroes they loved as kids.

Kids can show off the characters they love right now.

A friendly tip: set a budget before you start. The temptation to grab one more figure is very real.

Your wallet will thank you, even if your inner eight-year-old protests a little.

Keep An Eye Out For The Furry Staff Member

Not every employee here walks on two legs. A shop cat helps give the store its one-of-a-kind personality.

Bookstores and cats just seem to belong together. Add millions of comics, and you’ve got a pretty lucky cat.

It has more places to explore than most of us could dream of.

Animal lovers will probably consider a cat sighting the highlight of the trip. Kids especially get a kick out of a surprise furry greeting between the shelves.

It turns a shopping run into a small adventure.

Of course, a shop cat is still a cat. It keeps its own schedule and makes its own choices.

Spotting it might take a little patience or a little luck.

Please be gentle if you do meet. Let the cat come to you instead of chasing it down the aisles.

A calm hand and quiet voice go a long way.

Little touches like this make a huge store feel warm. Giant warehouses can sometimes feel cold and plain.

A friendly cat changes that mood in a hurry and adds a homey charm.

Head Upstairs For A Surprise Nobody Sees Coming

Superheroes and spaceships aren’t the only things worth seeing inside. Upstairs, an exhibit is dedicated to Native American art.

Owner Chuck Rozanski curated the collection himself. That personal touch gives the space a different feel from the busy shop floor below.

It’s a quieter stop in a very lively building.

Few people expect an art exhibit inside a comic store. That surprise is part of the charm.

It shows the owner’s interests stretch far beyond capes and comic panels.

Give yourself time to slow down here. Art rewards a careful look much more than a quick glance.

A few calm minutes can be a nice break after hours of browsing.

Families might use the exhibit as a teaching moment. Kids can see that storytelling takes many forms across many cultures.

Comics are one way to tell a story, and art is another.

Mile High Comics – Jason Street Mega Store keeps finding new ways to surprise people. This upstairs gallery might be the biggest twist of all.

Make sure it lands on your must-see list before you leave.

Game Night Gets A Major Upgrade Here

Card players, take note. Mile High Comics has advertised gaming tournaments for Magic: The Gathering, HeroClix, and Pokémon, though current tournament schedules should be confirmed before visiting.

These events give players a chance to test their decks against new opponents. They also offer a great way to meet people who share your hobby.

Few things bond strangers faster than a close match.

The building has also hosted conventions and even drag shows. That variety makes the space feel open and welcoming to many groups.

It’s more of a community hub than a simple store.

Curious what an event looks like before you go? The store shares event videos on its YouTube channel.

It’s an easy way to get a feel for the energy.

New to tournaments? Don’t let nerves stop you.

Plenty of players started out unsure of the rules, and everyone has to learn somewhere.

Check the schedule ahead of time, since events change throughout the year. Bring your cards, sleeves, and a good attitude.

Win or lose, you’ll leave with stories to tell and maybe a few new friends.

That Giant Highway Sign Is Basically An Invitation

Drivers on I-25 and I-70 get a big hint about what’s nearby. An enormous Mile High Comics sign is visible from both highways.

That sign has probably caused plenty of sudden exit decisions. Honestly, who could blame anyone for pulling off?

A comic store this big deserves a quick detour.

Finding the store is simple once you know where to look. The address is 4600 Jason St, Denver, CO 80211.

It sits close to where those two major highways meet.

That location makes it handy for travelers passing through Colorado. Road trippers can stretch their legs and shop at the same time.

Locals have an easy drive from many parts of the metro area.

Plan for more time than you think you’ll need. A quick stop can easily turn into a long afternoon.

Let anyone waiting for you know that ahead of time.

Keep an eye on the hours before you go. The store opens daily, though weekend times are a little shorter.

Showing up early gives you the most browsing time possible.

Smart Timing Makes Your Visit Even Better

Seven days a week, the doors open for comic lovers. Weekdays run from 9 AM to 6 PM, which gives you plenty of room to explore.

Saturday hours run from 10 AM to 6 PM. Sunday is the shortest day, open from 11 AM to 5 PM.

Plan around those times if you want a long, relaxed visit.

Wear comfortable shoes, because this place covers a lot of ground. Forty-five thousand square feet of retail space adds up fast.

Your feet will notice by the end.

Bring a list, but stay flexible. Some of the best finds are the ones you never planned to buy.

A random cover can turn into a brand-new obsession.

Mile High Comics – Jason Street Mega Store makes a great outing for families, friends, or solo explorers. Everyone can split up and meet back later with their treasures.

Comparing finds at the end is half the fun.

Few shops in Colorado can match this kind of scale and history. It’s a must for anyone who ever loved a hero.

Go ahead and let your inner child lead the way.