Mcclain is a distinctive boys' name in United States, ranking #5164 in 2020 with 18 recorded births. The name reached its all-time peak in 2022 with 21 births ranking #4799. Since 1996, the popularity has increased by 80.0%. In 2020, approximately 1 in every 95,837 boys born was named Mcclain. STABLE Recent data shows the name is currently stable.