Mattias is a distinctive boys' name in United States, ranking #1114 in 2021 with 184 recorded births. The name reached its all-time peak in 2021 with 184 births ranking #1114. Since 1996, the popularity has increased by 982.4%. In 2021, approximately 1 in every 9,501 boys born was named Mattias. STABLE Recent data shows the name is currently stable.