Lachlan is a distinctive boys' name in United States, ranking #726 in 2021 with 356 recorded births. The name reached its all-time peak in 2024 with 389 births ranking #691. Since 1996, the popularity has increased by 2,866.7%. In 2021, approximately 1 in every 4,911 boys born was named Lachlan. RISING Recent data shows the name is currently rising.