In 2018, 30 is the most common age for an American (U.S.) Bjorn* who is registered male with the Social Security Administration. It is the 5485th most common male first name for living U.S. citizens. *diacritics and punctuation don't appear in SSA data, so if a parent intended BJÖRN or BJØRN, that distinction is not reflected.
― Anonymous User 10/19/2018
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The name Bjorn was given to fifty-one baby boys born in the U.S. in 2013.
This is my father's name. His mother was 19 when she got him, and I can't see a 19 year old giving her son the name Björn. But I think it's a nice name.