Related:John Krasinski Had To Lie With David Letterman During Their Late Show Interview For The Sake Of The Office Letterman owns a number of properties, including a massive ranch in Montana.

David Letterman was born on April 12 ... a 2700-acre ranch near Chateau, Montana, a property in St. Barth's, and a place on Martha's Vineyard. Finally, Letterman co-owns Rahal Letterman Racing ...