Isabeau is a distinctive girls' name in United States, ranking #9975 in 2012 with 11 recorded births. The name reached its all-time peak in 2013 with 25 births ranking #5381. Since 1996, the popularity has decreased by 31.3%. In 2012, approximately 1 in every 160,067 girls born was named Isabeau. STABLE Recent data shows the name is currently stable.