Isabeau is a distinctive girls' name in United States, ranking #10973 in 2009 with 10 recorded births. The name reached its all-time peak in 2013 with 25 births ranking #5381. Since 1996, the popularity has decreased by 37.5%. In 2009, approximately 1 in every 183,687 girls born was named Isabeau. STABLE Recent data shows the name is currently stable.