Brittlyn is a distinctive girls' name in United States, ranking #14764 in 1999 with 5 recorded births. The name reached its all-time peak in 2001 with 9 births ranking #10250. Since 1996, the popularity has decreased by 28.6%. In 1999, approximately 1 in every 354,756 girls born was named Brittlyn. STABLE Recent data shows the name is currently stable.