BabyNameLens · Girl names · Boy names
“Coal town, or Koli's settlement” — Old Norse origin
Girl's name · #2828 in the US (2025) · Timeless
Colby holds its lane: charted since 1950 and rarely far from where it stands today (#2828 in 2025). About 4,200 girls have carried it along the way. It is also an American family name — about 11,000 people carry it as a surname, according to US census data. About 89% of babies named Colby in recent years have been boys. Together with its spelling variants Colbie (#881) and Kolbie (#1905), Colby would rank around #628 with about 460 births last year — the newborns split about 65/22/13 across Colbie, Kolbie, and Colby.
Around the world: about 1 in 16,000 girls in Canada (2024).
Appears in 2020-2025 birth records of 2 states. See the full state-by-state map on this page.
Among 120 notable people named Colby:
Sports figures appear 2.9× more often than among typical names — e.g. Colby Barnett, Canadian soccer player.
Similar names: Kolbie · Marlena · Collette · Kirby · Annmarie · Cori
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