Keithen is a distinctive boys' name in United States, ranking #11477 in 2016 with 6 recorded births. The name reached its all-time peak in 2006 with 21 births ranking #4434. Since 1996, the popularity has decreased by 50.0%. In 2016, approximately 1 in every 316,202 boys born was named Keithen. FALLING Recent data shows the name is currently falling.