Isobella is a moderately popular girls' name in England & Wales, ranking #489 in 2011 with 87 recorded births. The name reached its all-time peak in 2010 with 96 births ranking #438. Since 1996, the popularity has increased by 480.0%. In 2011, approximately 1 in every 3,693 girls born was named Isobella. FALLING Recent data shows the name is currently falling.