Brynn is a moderately popular girls' name in United States, ranking #361 in 2021 with 847 recorded births. The name reached its all-time peak in 2011 with 1,665 births ranking #192. Since 1996, the popularity has increased by 384.0%. In 2021, approximately 1 in every 1,936 girls born was named Brynn. STABLE Recent data shows the name is currently stable.