Brock is a moderately popular boys' name in United States, ranking #449 in 2015 with 679 recorded births. The name reached its all-time peak in 2003 with 1,378 births ranking #243. Since 1996, the popularity has decreased by 23.4%. In 2015, approximately 1 in every 2,822 boys born was named Brock. FALLING Recent data shows the name is currently falling.