Colby

“Coal town, or Koli's settlement” — Old Norse origin

Boy's name · #615 in the US (2025) · 2000s

Colby has appeared in US records since 1888 — best rank #99 (2001) · 53,971 babies named Colby all-time · 1 in 3,700 boys born in 2025.

Around the world: about 1 in 830 boys in N. Ireland (2025) · about 1 in 1,200 boys in England & Wales (2025) · about 1 in 1,500 boys in Scotland (2025).

Appears in 2020-2025 birth records of 39 states. See the full state-by-state map on this page.

Famous Colbys

Colby O'Donis — American singer
Colby Covington — American mixed martial artist (born 1988)
Colby Stevenson — American freestyle skier
Colby Cave — Canadian ice hockey player
Colby Ruckle — Canadian First World War flying ace (1893-1944)

In stories & tradition

Colby Granger — Numbers
Colby Thorne — Home and Away

What Colbys become

Among 120 notable people named Colby:

Athletes appear 2.9× more often than among typical names — e.g. Colby Covington, American mixed martial artist (born 1988).

Browse more boy names — popularity, trends and eras for 5,700+ American names, free.