Courlander was born in Indianapolis, Indiana, the son of the painter David Courlander of Detroit, Michigan. Courlander received a B.A. in English from the University of Michigan in 1931. At the University of Michigan, he received three Avery Hopwood Awards (one in drama and two in literary criticism). He attended graduate school at the University of Michigan and Columbia University. He spent time in the 1930s on a farm in Romeo, Michigan. There, he built a one-room log cabin in the woods where he spent much of his time writing.