Thrift Shopping in Wentzville, MO: A Local's Guide

If you live in Wentzville, Lake St. Louis, O'Fallon, or anywhere across St. Charles County, you already know that our community has a big heart. One of the best ways to experience that generosity firsthand is by thrift shopping locally. At Mary Martha Thrift Shop, located at 9 W Koenig St in downtown Wentzville, thrifting isn't just about scoring a great deal — it's about being part of something bigger.
Why Thrift Shopping Matters in St. Charles County
Thrift shopping is one of the most sustainable, budget-friendly ways to shop, and it has a direct positive impact on our local community. When you buy secondhand, you keep usable items out of landfills, reduce demand for new manufacturing, and save money. But at Mary Martha, your purchase does even more: 100% of our proceeds go directly to charitable awards supporting local organizations across St. Charles County and the surrounding areas.
That means the gently used jacket you buy might help fund meals for a senior through Aging Ahead's Meals on Wheels program, or provide emergency food through the LINC Food Pantry right here in Wentzville. Every dollar you spend stays local and supports neighbors in need.
What You'll Find at Mary Martha
Because our inventory is entirely donation-led, our shelves are constantly refreshed with new treasures. Shoppers can browse:
- Women's, men's, and children's clothing — including name brands at a fraction of retail prices
- Household goods and home decor — perfect for first apartments or refreshing a room
- Toys and games — great for kids' gifts and family game nights
- Books and media — from novels to children's books and more
- Kitchenware and accessories — everything you need to stock a kitchen
One of the things our regular shoppers love most is that you never know what you'll find. Our inventory changes daily as generous donors bring in new items, so every visit is a new adventure.
Tips for Thrifting in Wentzville
- Visit often. Because our inventory rotates quickly, stopping in weekly gives you the best chance to find unique items.
- Know our hours. We're open Tuesday 9am–4pm, Thursday 9am–6pm, and Friday & Saturday 9am–12pm. Thursday evenings are a great time to browse after work.
- Bring cash. Mary Martha is cash only, which helps us keep prices low and directs more money to charity.
- Use both entrances. There's a second entrance along the side street with a separate checkout for home goods and craft supplies — don't miss it!
- Donate, too. If you're decluttering, bring your gently used items along. It's a full circle of giving.
More Than a Store
Mary Martha Thrift Shop is supported by seven local churches working together to serve the underserved: Dardenne Presbyterian Church, Faith United Church of Christ, Immaculate Conception Catholic Church, Immanuel Lutheran Church, St. John's United Church of Christ, St. Patrick Catholic Church, and the United Methodist Church of Wentzville. When you shop with us, you're joining this coalition of compassion.
Our volunteers are our greatest treasure, and you'll feel their warmth the moment you walk in. Whether you're a longtime Wentzville resident or new to the area, we'd love to welcome you. Come find your next treasure — and know that your purchase is making a real difference right here at home.