Kolby
Gender: Mostly Boy
Meaning: Coal settlement, dark village
Origin: Old Norse/English
Popularity: Ranked #1225 in 2025 with 165 babies born.
History: Kolby is a spelling variant of Colby, from the Old Norse meaning coal settlement or dark village. The K spelling emerged in the United States as a modern variant offering a slightly more distinctive look while maintaining the same friendly, approachable sound.
Name length: 5 letters
How common is Kolby? About 1 in 16,080 babies born in 2025 were named Kolby, or roughly 0.6 per day in the United States.
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Frequently asked about Kolby
What does the name Kolby mean?
Kolby means “Coal settlement, dark village” from Old Norse/English roots.
What is the origin of the name Kolby?
Kolby has Old Norse/English origin. The traditional meaning is “Coal settlement, dark village”.
How popular is Kolby?
Kolby ranked #1222 in 2025 — given to 165 babies that year.
When was Kolby most popular?
Kolby peaked in 2001 with 739 babies registered that year.
Is Kolby a boy or girl name?
Kolby is used for both boys and girls. In the records, about 90% of Kolbys are boys and 10% are girls.
Is the name Kolby rising or falling in popularity?
Kolby has risen 4145 spots in the rankings over the last 5 years — from #5367 in 2020 to #1222 in 2025.
How long has Kolby been recorded?
Kolby appears in birth records across 56 years — from 1968 through 2025.