Bartosz is a distinctive boys' name in United States, ranking #8811 in 1999 with 6 recorded births. The name reached its all-time peak in 2009 with 24 births ranking #4174. Since 1996, the popularity has decreased by 33.3%. In 1999, approximately 1 in every 320,015 boys born was named Bartosz. FALLING Recent data shows the name is currently falling.