Mcclain is a distinctive boys' name in United States, ranking #6258 in 2010 with 14 recorded births. The name reached its all-time peak in 2022 with 21 births ranking #4799. Since 1996, the popularity has increased by 40.0%. In 2010, approximately 1 in every 137,029 boys born was named Mcclain. STABLE Recent data shows the name is currently stable.