Isabeau is a distinctive girls' name in United States, ranking #7268 in 1998 with 13 recorded births. The name reached its all-time peak in 2013 with 25 births ranking #5381. Since 1996, the popularity has decreased by 18.8%. In 1998, approximately 1 in every 135,915 girls born was named Isabeau. STABLE Recent data shows the name is currently stable.