Janessa is a distinctive girls' name in United States, ranking #647 in 2002 with 390 recorded births. The name reached its all-time peak in 2009 with 556 births ranking #545. Since 1996, the popularity has increased by 27.0%. In 2002, approximately 1 in every 4,607 girls born was named Janessa. FALLING Recent data shows the name is currently falling.