Terrilyn is a distinctive girls' name in United States, ranking #12104 in 2002 with 8 recorded births. This places Terrilyn in the bottom 33% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1997 with 11 births ranking #8302. Since 1996, the popularity has increased by 33.3%. In 2002, approximately 1 in every 224,603 girls born was named Terrilyn. FALLING Recent data shows the name is currently falling.