In 2018, 53 is the most common age for an American (U.S.) Kirby who is registered male with the Social Security Administration. It is the 1900th most common male first name for living U.S. citizens. In 2018, 26 is the most common age for an American (U.S.) Kirby who is registered female with the Social Security Administration. It is the 4, 105th most common female first name for living U.S. citizens.
― Anonymous User 10/19/2018
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The name Kirby was given to 53 boys born in the US in 2015.