The main campus of USM is located between of hills in
Leavenworth, Kansas, and is the location of undergraduate classrooms, three residential halls (Berkel Hall, Maria Hall & Steele Hall), and the main academic and administrative offices. It is near a nature preserve and has stately academic buildings, indoor athletic facilities, and outdoor playing fields. The Overland Park Campus is in
Overland Park, Kansas, on College Boulevard, near Roe Avenue and off of I435. This campus hosts evening master's degree classes and degree-completion programs. Its main function is accelerated degree completion and graduate programs and it is home to various resource centers. The Wyandotte County Campus is located inside Providence Medical Center. It hosts master's degree classrooms and degree completion programs year round. Saint Mary offers Masters in Art education at Sacred Heart in
Shawnee, Kansas, and has an online degree program given in eight-week sessions. Some of the buildings on these campuses are Annunciation Chapel, Saint Mary Hall, Xavier Courtyard, DePaul Library, McGilley Fieldhouse, Kehoe Memorial Baseball Field, Charles J. Berkel Memorial Stadium and the Ryan Sports Center. The University of Saint Mary began its Prison Education Program in 2021 at the
Lansing Correctional Facility. Since then, it has expanded into the US Military
Disciplinary Barracks and
Joint Regional Correctional Facility, both on Fort Leavenworth, as well as the
Federal Correctional Institution-Leavenworth. Today, the program provides associate's and bachelor's degrees in business administration management to more than 100 students across all locations. file:St. Mary's University 4594.JPG|Main building file:St. Mary's University 4582.JPG|House file:St. Mary's University Annunciation Chapel 4589.JPG|Annunciation Chapel File:University of St Mary Gazebo 4619.JPG|Gazebo File:St. Mary's University Banner 4595.JPG|Banner ==Organization and administration==