January Jones is 45 years and 8 month(s) old. She was born in 5 Jan, 1978. January Kristen Jones is an actor and model from the United States. She is well known for her role as Betty Draper in Mad Men. She was nominated for Best Actress in a Drama Series at the Golden Globes twice, as well as Outstanding Lead Actress in a Drama Series at the Primetime Emmys. She also played Melissa Chartres in X-Men: First Class as well as American Wedding, We Are Marshall, The Boat That Rocked, Unknown, and Seeking Justice.