Serenity Corner Spearfish, SD - Assisted Living Community size: Medium (11-25) Get Prices & Availability (800) 341-4753 Office Serenity Corner is a wonderful assisted living community in Spearfish, South Dakota. It is within lively Lawrence County which is part of the Mount Rushmore State. + Read more Share this listing: Spearfish Senior Services Near Me None Listed Spearfish Senior Living Near Me