Jacek is a distinctive boys' name in United States, ranking #12975 in 2023 with 5 recorded births. This places Jacek in the bottom 9% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2013 with 37 births ranking #3019. Since 1996, the popularity has decreased by 37.5%. In 2023, approximately 1 in every 341,710 boys born was named Jacek. STABLE Recent data shows the name is currently stable.