In 2018, 52 is the most common age for an American (U.S.) Kathy* who is registered female with the Social Security Administration. It is the 162nd most common female first name for living U.S. citizens. *as a first name, not a nickname.
― Anonymous User 10/17/2018
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The name Kathy was given to 126 girls born in the US in 2015.
https://fr.m.wiktionary.org/wiki/Kathy
https://meilleursprenoms.com/popularite-prenom/Kathy