Mariah Carey age is 53 years old. Mariah Carey is a well-known actress, singer, songwriter, and music producer. She is one of the most well-known musicians of all time and has been a part of the music business for more than three decades. Her career officially began in 1990 with the publication of her self-titled debut album, which quickly became a hit because to the number-one hit single "Vision Of Love" that it featured. Mariah is now the best-selling female artist in history after selling more than 200 million records globally since that time.