Maciej is a distinctive boys' name in United States, ranking #6913 in 2007 with 12 recorded births. The name reached its all-time peak in 1996 with 18 births ranking #3773. Since 1996, the popularity has decreased by 33.3%. In 2007, approximately 1 in every 172,936 boys born was named Maciej. RISING Recent data shows the name is currently rising.