Marklund is a 501(c)(3) nonprofit organization that offers a range of services for individuals with severe and profound developmental disabilities and special healthcare needs. With three residential locations in Illinois, including the Marklund Hyde Center in Geneva, the Marklund Philip Center in Bloomingdale, and the Marklund Wasmond Center in Elgin, they provide 24-hour care for nearly 178 residents. Each location also offers Community Day Services for adults, focused on daily living and vocational skills to enhance independence. Marklund Day School, located in Bloomingdale, Geneva, and Elgin, is a non-public, state-licensed therapeutic day program for children with complex medical needs, learning, emotional, and developmental disabilities, as well as those on the autism spectrum.

The organization employs over 500 staff members and relies on thousands of volunteers to support their residents and community clients. Marklund's mission is to make everyday life possible for individuals with profound disabilities, providing them with the care, education, and support they need to thrive.