Finnegan is a moderately popular boys' name in United States, ranking #378 in 2021 with 860 recorded births. The name reached its all-time peak in 2021 with 860 births ranking #378. Since 1996, the popularity has increased by 17,100.0%. In 2021, approximately 1 in every 2,033 boys born was named Finnegan. FALLING Recent data shows the name is currently falling.