Casmur Assisted Living Billings, MT - Assisted Living Community size: Medium (11-25) Get Prices & Availability (800) 341-4753 Office Casmur Assisted Living is a pleasing assisted living community in Billings, Montana. It is within delightful Yellowstone County which is part of the Treasure State. + Read more Share this listing: Billings Senior Services Near Me None Listed Billings Senior Living Near Me