Lachlan is a moderately popular boys' name in England & Wales, ranking #328 in 2024 with 134 recorded births. The name reached its all-time peak in 2024 with 134 births ranking #328. Since 1996, the popularity has increased by 930.8%. In 2024, approximately 1 in every 2,073 boys born was named Lachlan. RISING Recent data shows the name is currently rising.