The first name Kolby
A unisex name.
2 syllables Unisex
Meaning and origin
Modern variant of Colby.
From Wiktionary (CC BY-SA 4.0).
Popularity
Babies registered in England and Wales, 1996–2025
In 2025, 20 boys were named Kolby, making it the 1,359th most popular boys’ name. It peaked in 2023, with 28 births (#1,042).
Office for National Statistics; years with fewer than three births are not published and show as zero. Compare Kolby with other names.
Popularity in the United States
Babies named Kolby at birth, 1880–2025
In 2025, 165 boys born in the United States were named Kolby, the 1,225th most popular boys’ name that year. It was used most in 2001, when 739 were.
US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.
Questions
- What does the name Kolby mean?
- Modern variant of Colby.
- How popular is the name Kolby?
- In 2025, 20 boys born in England and Wales were named Kolby, ranking 1,359th. Its peak was 2023, with 28 births.
- Is Kolby a boy's or a girl's name?
- Both. Of the 13,001 US babies named Kolby since 1880, 10% were girls and 90% boys.
- When was Kolby most popular?
- 2001 in the United States, when 739 babies were named Kolby, its highest rank at 359th.