Sumner is a distinctive girls' name in United States, ranking #14329 in 2005 with 7 recorded births. The name reached its all-time peak in 1997 with 13 births ranking #7232. Since 1996, the popularity has decreased by 12.5%. In 2005, approximately 1 in every 263,957 girls born was named Sumner. RISING Recent data shows the name is currently rising.