Isobella is a distinctive girls' name in United States, ranking #8249 in 2007 with 15 recorded births. The name reached its all-time peak in 2009 with 22 births ranking #6187. Since 1996, the popularity has increased by 200.0%. In 2007, approximately 1 in every 128,163 girls born was named Isobella. FALLING Recent data shows the name is currently falling.