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HISTORIC MAIN STREET  •   SAINT CHARLES, MO

Coworking & Private Offices on Historic Main Street

Saint Charles County's most distinctive workspace campus. 8 renovated historic buildings, 50,000+ sq ft, steps from the restaurants and coffee shops of downtown Saint Charles.

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ABOUT OPO STARTUPS

Where Saint Charles Businesses Come to Grow

Founded in 2015 by Randy Schilling, OPO Startups transformed the landmark 1909 Old Post Office building on Historic Main Street into one of Missouri's most unique coworking campuses. What started as a single building has grown into an 8-building, 50,000+ sq ft innovation community spanning a full city block.

From $20 drop-in day passes to fully furnished private office suites, OPO offers the infrastructure, community, and historic address that entrepreneurs and businesses in St. Charles County need to thrive.

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MEMBERSHIPS & PRICING

A Workspace for Every Need

Flexible options for remote workers, entrepreneurs, and growing businesses in Saint Charles, MO. All include free parking, fiber internet, and coffee.

Some of the Local Startups & Retailers at OPO

Munibit
Clever Real Estate
Crossbar
Veryable
Padmission
I-SERV
Singlewave
Addman Group
Curate
Boardroom Bullpen
Mercury CRM Solutions
Frontier Perk Cafe
MJ's by JuJu B's
JuJu B's Boutique
Hot Sauce Werks
Katy Trail Collections
Out of the Box Properties - Real Estate
Pistols and Vixens - Boutique

Reviews That Speak for Themselves

  • Craig Duckworth
    Velta Technology

    “The community support from other entrepreneurs and business owners is a plus and we have access to everything a large organization has with an office campus, without the investment.”

  • Anna Kunza
    Amazon

    ”Absolutely love OPO. The space is beautiful and open with great working spaces, conference rooms, internet and coffee! The staff is friendly, and the location is very charming. My favorite coworking space to date!”

  • James Crain
    Gravy

    ”Without a doubt, it has been the best investment I have made for myself/company. Randy has really made this into a home away from home. Super supportive community when it comes to growing your business. Can't recommend enough!”

  • Bob Miano
    Video Producer / Director

    ”OPO is unlike any other coworking space! It's a convenient location for my clients and there is plenty of free parking available. Best business decision i’ve ever made!”

  • Deb Meyer
    SV CPA Services

    ”OPO Startups is great! They've created a warm, welcoming environment for entrepreneurs to succeed.”

  • Jordan Stipes
    Snap Pro AV

    ”OPO has been a key component in the accelerated growth of my small business, but also for myself professionally as a entrepreneur! The Five Star rating is an understatement!”

  • Jason Yingling
    HLK

    ”Excellent place to work. Tons of friendly and smart people throughout. Lots of great work being done at OPO each day!”

  • Brett O’Daniell
    HomeTraq

    “Fantastic place to work and network for anyone, but especially entrepreneurs and creative thinkers.”

  • Benjamin Auton
    SingleWave Technologies

    “Great place to work in a perfect location! The Schillings are easy to work with and care about the OPO community.”

  • Trevor Tune
    A.D. Development

    ”OPO is located in a very cool, historic building on with plenty of coffee shops near by. The community is very close and the management team goes above and beyond!”

  • Mislav Magerl
    Microsoft

    ”A great space to work in with nice desks, chairs and amenities. Since it's on Main Street it's very convenient to get lunch or coffee. Nice staff, always clean and very comfy. Would recommend to anyone!”

  • Ben Woods
    Provi

    ”OPO is a great co-working space where the staff makes you feel right at home. All of the buildings and offices are beautiful and extremely well designed. I would recommend OPO to anyone.”

  • Scott Southwick
    Your Local Business Marketing Group

    “This has to be one of the most AMAZING places I've had the pleasure of visiting. What they are doing for the entrepreneur community is such as huge asset.”

  • Joe Degenhardt
    CompuFACT

    “OPO is such a great concept that when coupled with such great people, it creates a fantastic work environment! It is so easy to get excited about a place like this!”

  • Kate Bayer
    Munibit

    OPO is an awesome place to work, collaborate and grow! Its unique location and buildings really set it apart from other coworking spaces in the STL area.”

  • Chris Layer
    Big Forest Video

    ”OPO has been nothing short of amazing to work with. Every person on staff is very helpful and personable, and they always show genuine interest in our business. Can't recommend it highly enough!”

  • Zach Hesterberg
    SoZesty

    “I wanted a more professional place to work because I was spending far too much time at Starbucks. The community at OPO has been extremely supportive and it's great to collaborate with like minded individuals.”