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How Many People Are Named Kolby?
Estimated people named Kolby living in the U.S. today
12,526
Gender distribution
90% male · 10% female in SSA records.
Name scorecard
- Total U.S. births recorded (1880–2024): 12,792
- Peak year: 2001 (781 births)
- Estimated living today: 12,526
Kolby by age group — who carries the name today?
Kolby popularity over time (1880–2024)
Estimated living bearers by birth decade
About the name Kolby
Kolby has been recorded by the Social Security Administration since the 19th century dataset began. In total, 12,792 babies were given the name in the United States between 1880 and 2024. After adjusting each birth cohort for survival to today, an estimated 12,526 bearers are still living — roughly 1 in 27,287 Americans. The name's strongest decade shapes how old most Kolbys you meet will be, which the age-group breakdown above shows directly. All figures are statistical estimates from public records; see our methodology for sources, the survival model, and the limits of the data (names given to fewer than five babies in a year are not published by the SSA).
Frequently asked questions
How many people are named Kolby in the US?
An estimated 12,526 people named Kolby are living in the United States today, based on SSA birth records from 1880 to 2024 adjusted for survival. That makes Kolby rare — about 1 in 27,287 Americans.
Is Kolby a boy or girl name?
In SSA records, Kolby is 90% male and 10% female, so it is predominantly a male name.
When was Kolby most popular?
Kolby peaked in 2001, when 781 babies were given the name. Its current trend is declining compared with the previous decade.
How rare is the name Kolby?
Kolby ranks #2,095 of 104,819 first names recorded by the SSA, with a rarity score of 52 out of 100 (higher means rarer).