Isobella is a distinctive girls' name in United States, ranking #6187 in 2009 with 22 recorded births. The name reached its all-time peak in 2009 with 22 births ranking #6187. Since 1996, the popularity has increased by 340.0%. In 2009, approximately 1 in every 83,494 girls born was named Isobella. FALLING Recent data shows the name is currently falling.