Isabeau is a distinctive girls' name in United States, ranking #10547 in 2002 with 9 recorded births. The name reached its all-time peak in 2013 with 25 births ranking #5381. Since 1996, the popularity has decreased by 43.8%. In 2002, approximately 1 in every 199,647 girls born was named Isabeau. STABLE Recent data shows the name is currently stable.