Janessa is a distinctive girls' name in United States, ranking #686 in 2000 with 346 recorded births. The name reached its all-time peak in 2009 with 556 births ranking #545. Since 1996, the popularity has increased by 12.7%. In 2000, approximately 1 in every 5,248 girls born was named Janessa. FALLING Recent data shows the name is currently falling.