Gasteyer was born in Washington, D.C., the daughter of Marianna, an artist, and Phil Gasteyer, the mayor of Corrales, New Mexico.[1] She graduated from Sidwell Friends School and Northwestern University. Ana and her husband Charlie welcomed their daughter, Frances McKittrick in June 2002, she weighed 9 lb 1 oz (4.1 kg) At age 40, she is expecting a son, due March 2008.