The Sumner Campus, the newest of Cowley College's four locations, was established in 2018 and features three modern buildings. Amenities include the Tiger Eatery, the Bill and Marjorie Short Community Room, and a bookstore. In 2022, a 16-unit residential housing facility offers single-occupancy dorms with a kitchen, free laundry, and Wi-Fi.
This campus is dedicated to Career and Technical Education, hosting programs in Agriculture Studies, Computer Science, Emergency Medical Services, Information Technology, and Game Development, as well as specialized fields like Welding, Machine Tool Technology, and Manufacturing Technology. The Sumner Campus provides comprehensive, hands-on training for career-focused disciplines.