Isobella is a distinctive girls' name in United States, ranking #9957 in 2003 with 10 recorded births. The name reached its all-time peak in 2009 with 22 births ranking #6187. Since 1996, the popularity has increased by 100.0%. In 2003, approximately 1 in every 182,705 girls born was named Isobella. FALLING Recent data shows the name is currently falling.