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“Wide meadow; alternatively, named for Saint-Denis in France” — Old English/French origin
Girl's name · #1878 in the US (2025) · 2000s
Sidney reached its best rank, #258, in 1999 and ranked #1878 in 2025. Roughly 25,000 girls have been named Sidney since 1880. In all that time it has never once missed a year of the national records. Sidney is split almost evenly between girls and boys among recent newborns. Sidney is the less common spelling of Sydney — about 11% of babies given the name are written this way; Sydney itself ranked #348 in 2025.
Around the world: about 1 in 6,000 girls in Scotland (2025) · about 1 in 10,000 girls in England & Wales (2025) · about 1 in 10,000 girls in Canada (2024).
Appears in 2020-2025 birth records of 13 states. See the full state-by-state map on this page.
Among 1,135 notable people named Sidney:
Lawyers & judges appear 1.59× more often than among typical names — e.g. Sidney Powell, American attorney and conspiracy theorist.
Similar names: Sydney · Karlee · Shyla · Imani · Ally · Emilee
Browse more girl names — popularity, trends and eras for 5,700+ American names, free.