Isobella is a distinctive girls' name in United States, ranking #15836 in 2025 with 5 recorded births. This places Isobella in the bottom 8% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 22 births ranking #6187. In 2025, approximately 1 in every 321,453 girls born was named Isobella. FALLING Recent data shows the name is currently falling.