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Your trusted convenience store for over 100 years, serving Michigan with care.
PS Food Mart is locally owned and operated with 35 stores located throughout South Central MI
We are committed to provide a quality work environment for our team members that encourage creative participation by all employees, leading to the highest quality of service for our customers.
We welcome your feedback and comments at any time.
Thank you for being a PS Food Mart customer!
Folk Oil Company, Inc. currently manages 35 retail convenience stores in South Central Michigan. Folk Oil’s roots began in 1921 with L.H. Folk, a Standard Oil agent, providing fuel oil and lubricants to rural homes/farms in Calhoun County Michigan.
L.H. Folk’s successors were his son Robert Folk and his grandson, Richard Folk. Richard Folk became president of Folk Oil in 1973. In 1974, Folk Oil purchased the Homer Yost Service Station that became known as the “Pop Shop (PS),” and it became the first Folk Oil convenience store.
Folk Oil Company convenience stores operate under the name of “PS Food Mart.” Folk Oil currently owns and manages 35 convenience stores, 5 automatic Car Washes, 9 Subway franchises, a Tubby's Sub franchise, a Denny’s Restaurant franchise, 3 Chester's Chicken franchises, and the 115 Family Restaurant. You will find CITGO fuel at our locations.
In providing a great experience to our customers, all of our locations have extra clean restrooms as well as friendly team members to assist you. We serve our gourmet “Java Peak” brand of coffee products and our Big Chill Zone fountain products.

Dick has been the leader of the company since 1973. As the third generation of the family, his passion and knowledge of the industry continue to influence and help to keep PS Food Mart as the ultimate destination in your everyday travels.
Hired in 2005 and promoted to President in 2021. Jim is a 4th generation family member. His drive for success and creativity has enabled the company to expand its footprint. He brings a strong and innovative vision for the future to continue into the next chapter of Folk Oil’s 100 year history.
Hired in 2018. Thyra is a 4th generation family member. She is a key contributor to the growth of the company with her leadership of PS We Love You Rewards and her strong influence on the workforce culture.
As Director of Operations, Mike plays a vital role in the day to day success and long-term growth of our convenience store family. Mike began his journey with the company as a store manager in 2011, gaining hands-on experience and a deep understanding of what it takes to run exceptional stores.
Amber has been a key member of the team since 1990. Her knowledge and leadership are an asset to the company, and help position us for growth while maintaining financial security as a company.