Maciej is a distinctive boys' name in United States, ranking #5694 in 2006 with 15 recorded births. The name reached its all-time peak in 1996 with 18 births ranking #3773. Since 1996, the popularity has decreased by 16.7%. In 2006, approximately 1 in every 137,008 boys born was named Maciej. RISING Recent data shows the name is currently rising.