Sidney is a moderately popular boys' name in England & Wales, ranking #220 in 2024 with 224 recorded births. The name reached its all-time peak in 2021 with 319 births ranking #168. Since 1996, the popularity has increased by 376.6%. In 2024, approximately 1 in every 1,240 boys born was named Sidney. FALLING Recent data shows the name is currently falling.