Bj is a distinctive boys' name in United States, ranking #5320 in 2000 with 13 recorded births. The name reached its all-time peak in 1996 with 15 births ranking #4200. Since 1996, the popularity has decreased by 13.3%. In 2000, approximately 1 in every 151,072 boys born was named Bj. RISING Recent data shows the name is currently rising.