Isobella is a distinctive girls' name in United States, ranking #11252 in 2005 with 9 recorded births. The name reached its all-time peak in 2009 with 22 births ranking #6187. Since 1996, the popularity has increased by 80.0%. In 2005, approximately 1 in every 205,300 girls born was named Isobella. FALLING Recent data shows the name is currently falling.