Macilyn is a girl name. It last appeared in U.S. Social Security records in 2014. Macilyn first appears in the data in 2013 and reached its peak in 2013 (8 births). The chart below shows how the name has risen and fallen over time.
How popular is Macilyn? (U.S. births per year)
U.S. births per year, 2013–2014 · hover or tap for the count and national rank · source: U.S. Social Security Administration