Macgregor is a distinctive boys' name in United States, ranking #4500 in 2000 with 17 recorded births. The name reached its all-time peak in 2000 with 17 births ranking #4500. Since 1996, the popularity has increased by 41.7%. In 2000, approximately 1 in every 115,525 boys born was named Macgregor. RISING Recent data shows the name is currently rising.