Janessa is a distinctive girls' name in United States, ranking #665 in 2012 with 426 recorded births. The name reached its all-time peak in 2009 with 556 births ranking #545. Since 1996, the popularity has increased by 38.8%. In 2012, approximately 1 in every 4,133 girls born was named Janessa. FALLING Recent data shows the name is currently falling.