Sumner is a distinctive girls' name in United States, ranking #20207 in 2007 with 5 recorded births. The name reached its all-time peak in 1997 with 13 births ranking #7232. Since 1996, the popularity has decreased by 37.5%. In 2007, approximately 1 in every 384,490 girls born was named Sumner. RISING Recent data shows the name is currently rising.