Isobella is a distinctive girls' name in United States, ranking #7031 in 2010 with 18 recorded births. The name reached its all-time peak in 2009 with 22 births ranking #6187. Since 1996, the popularity has increased by 260.0%. In 2010, approximately 1 in every 98,740 girls born was named Isobella. FALLING Recent data shows the name is currently falling.