Kolby
Girl name · American · English · Old English
Meaningfrom the coal farm · English form of Colby
- US rank
- #3,577
- Syllables
- 2
- Peak
- #2,672 in 2000
42 babies were named Kolby in the US in 2025. It has climbed 1,737 places in five years.
Save adds it to your list. Vote moves it up the top voted names.
US births per million girls, 1978–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Kolby you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- How commonAbout 1 in every 38,314 baby girls born in the US in 2025 was named Kolby, 42 babies in all. In a typical school of 500 kids, your Kolby would very likely be the only one.
- HistoryKolby first shows up in US birth records in 1968, the first year at least 5 babies got it. It has been in use for 57 years since.
- Best yearIts best year was 2000, when it reached #2,672.
- TrendKolby has climbed 1,737 places in the US rankings over the last five years and now sits at #3,577. Fast risers like this often keep climbing, so expect to hear it more.
- Boy or girlKolby is given to both boys and girls: 80% of the 207 babies named Kolby in 2025 were boys. That makes it one of the names that truly works for either.
- MeaningKolby is an English form of Colby, which means “from the coal farm”. Our records link it to American, English and Old English roots.
About the name Kolby
Kolby is a girl name of American, English and Old English origin meaning “from the coal farm”. It has 5 letters and 2 syllables, starting with K and ending in “-lby”. US birth records list Kolby for girls from 1978 to 2025, in 45 of those 48 years. Its best year was 2000, when it ranked #2,672 among girl names. In 2025 it ranked #3,577, with 42 babies.
Origin:American namesEnglish namesOld English names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1970s | 4.2 | 240,964 girls |
| 1980s | 7.5 | 133,333 girls |
| 1990s | 19 | 52,910 girls |
| 2000s | 18 | 56,529 girls |
| 2010s | 20 | 51,282 girls |
| 2020s | 21 | 48,309 girls |
Other spellings of Kolby
More American girl names
- Girl name: Lainey · possibly light
- Girl name: Daisy · day's eye
- Girl name: Josie · he will add
- Unisex name: Kinsley · king's meadow
- Girl name: Sienna · from Siena
- Unisex name: Brooklyn · from Brooklyn, New York
- Girl name: Summer · summer
- Unisex name: Stevie · crown
Questions about the name Kolby
What does the name Kolby mean?
Kolby means “from the coal farm” in English, as a form of Colby.
What is the origin of the name Kolby?
Kolby has American, English, Old English roots in our records. Other American names include Lainey, Daisy, Josie.
Is Kolby a boy or girl name?
Kolby is a girl name, though a few boys get it too.
How popular is the name Kolby?
Kolby ranked #3,577 for US girls in 2025, given to 42 babies. Its best year was 2000 (#2,672).