Colby is a distinctive choice, ranked #5892 in 2024. Your child is likely to be the only Colby in their class.
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UK Rank 2024
#5892
US Rank #582
About the Name Colby
Colby has seen a notable decline in recent years, dropping 5604 places in five years. It was most popular in 2023 at #222 — parents choosing it today are making a deliberately counter-trend decision. The name has been a consistent presence in UK records since 1996.
Colby is distinctive enough that your child will likely be the only one in both their class and their school — standing out on every register.
In the US it ranks even higher at #582, where it enjoys a particularly strong following.
Frequently Asked Questions
Common questions about the name Colby
Unlikely. With around 3 UK babies named Colby per year, your child will almost certainly be the only Colby in his class, and possibly the only one in the whole school.
Colby has been declining in UK popularity, dropping 5604 places in the last five years. Its peak was #222 in 2023. Choosing it now means he is likely to be among the last of his generation with this name.
Colby is more popular in the US (#582) than in the UK (#5892). Names with strong rankings in both countries tend to have broad cross-cultural appeal, working well for international families or those with ties to both nations.
Notable people named Colby include: Elbridge Colby — Elbridge Andrew Colby is an American national security policy professional who is the under secretary of defense for policy since April 9, 2025.; Colby Raha — Colby Raha is an X Games and motocross competitor..
Colby ranks #582 in the US top 1,000 (2024). It's recognised in America but considerably more popular in the UK.
3
UK babies named Colby (2024)
< 1
Expected classmates with this name (class of 28)
< 1
In a school of 600
↓ 5604 places
Rank change (last 5 years)
🏫 Who else is in the room?
In a typical UK class of 28, highlighted children share the name Colby
Likely around 1 other Colby in the class
UK Popularity (1996–2024)
Rank and birth count · ONS official data
US Popularity (2020–2024)
Rank · SSA official data
✨ Similar names to Colby
Names with a similar style — each with their own classroom story
Elbridge Andrew Colby is an American national security policy professional who is the under secretary of defense for policy since April 9, 2025. He previously served as deputy assistant secretary of defense for strategy and force development from 2017 to 2018 during the first Trump administration.
Colby Raha is an X Games and motocross competitor. Raha entered X-Games Minneapolis 2017 as a relatively unknown rider but has quickly become one of the most accomplished freestyle riders, racking up several X Games Medals since his debut.