Rocelyn is a distinctive girls' name in United States, ranking #11149 in 2003 with 9 recorded births. This places Rocelyn in the bottom 40% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2008 with 11 births ranking #10647. In 2003, approximately 1 in every 203,006 girls born was named Rocelyn. FALLING Recent data shows the name is currently falling.