Colby is a moderately popular boys' name in England & Wales, ranking #222 in 2024 with 220 recorded births. The name reached its all-time peak in 2024 with 220 births ranking #222. Since 1996, the popularity has increased by 1,194.1%. In 2024, approximately 1 in every 1,263 boys born was named Colby. RISING Recent data shows the name is currently rising.