Karen Thompson Walker was born and raised in San Diego, California, where The Age of Miracles is set. She studied English and creative writing at UCLA, where she wrote for the UCLA Daily Bruin. After college, she worked as a newspaper reporter in the San Diego area before moving to New York City to attend the Columbia University MFA program.
A former book editor at Simon & Schuster, she wrote The Age of Miracles in the mornings before work—sometimes while riding the subway.
She is the recipient of the 2011 Sirenland Fellowship as well as a Bomb Magazine fiction prize. She lives in Brooklyn with her husband.