Isobella is a distinctive girls' name in England & Wales, ranking #643 in 2002 with 42 recorded births. The name reached its all-time peak in 2010 with 96 births ranking #438. Since 1996, the popularity has increased by 180.0%. In 2002, approximately 1 in every 6,366 girls born was named Isobella. FALLING Recent data shows the name is currently falling.