In 2018, 53 is the most common age for an American (U.S.) Cindy* who is registered female with the Social Security Administration. It is the 220th most common female first name for living U.S. citizens. *as a first name, not a nickname.
― Anonymous User 10/17/2018
4
Under Diminutive, add Cinderella. Under Related Names, add Cinda.
Also Dutch: https://www.meertens.knaw.nl/nvb/naam/is/Cindy