Coleby
Boys' nameMeaning not yet documented
Coleby has been given to 225 babies in the U.S. since 1984. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 2001, with 19 recorded.
Babies named Coleby, 2010
1 in 616,000
Coleby over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Coleby?
Coleby had fewer than 5 recorded uses in 2025, so these figures use 2010, the last year it was published.
- Among all babies, 2010
- 1 in 616,000
- 6 of 3,695,928 births
- Among boys only
- 1 in 320,000
- <0.01% of boys
- Rank, 2010
- Unranked
- Fewer than 5 uses
- Coin-flip room size
- 426,971 kids
- Even odds of a second one
Where Coleby sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 2010 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 426,971 children born in 2010 and it's an even bet that one of them is another Coleby. In a class of 30 the chance is Under 1%.
When Colebys were born
Half of everyone ever recorded as Coleby was born before 1999 — so the typical Coleby is around 26 today.
- Biggest decade
- 2000s
- 44.9% of all use
- Born in the last 25 years
- 92.0%
- A modern name
- Recorded since 1950
- 225
- People you could plausibly meet
2000s — 44.9% of all recorded uses (101).
Is Coleby rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- —
- Not ranked then
- Rank vs 5 years ago
- New entry
- Not ranked then
- Rank vs 10 years ago
- —
- Not ranked then
- Births vs 10 years ago
- —
- Not published both years
- Share of its own peak
- 0%
- Peak was 2001 (19)
- Years since peak
- 24
- Years
- Year-to-year steadiness
- Volatile
- 43.9% average annual change
Spellings of Coleby
Coleby is not the most common spelling — Caleb is, with 43.2% against Coleby's 0.03%.
Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.
Coleby around the world
Where Coleby ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.
- England & Wales2002–2024#2,922in 2024
- Canada1994–1994#1,526in 1994
Popularity data from Office for National Statistics and Statistics Canada. ONS data under Open Government Licence v3.0. StatCan data under Statistics Canada Open Licence.
Coleby by the numbers
The raw record for each sex the name is used for.
Names similar to Coleby
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Coleby
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.