Jennefer is a distinctive girls' name in United States, ranking #4858 in 1998 with 22 recorded births. This places Jennefer in the top 29% 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 25 births ranking #4278. In 1998, approximately 1 in every 80,313 girls born was named Jennefer. FALLING Recent data shows the name is currently falling.