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How Many People Are Named Duncan?
Estimated people named Duncan living in the U.S. today
17,200
Gender distribution
100% male · 0% female in SSA records.
Name scorecard
- Total U.S. births recorded (1880–2024): 21,043
- Peak year: 1997 (644 births)
- Estimated living today: 17,200
Duncan by age group — who carries the name today?
Duncan popularity over time (1880–2024)
Estimated living bearers by birth decade
About the name Duncan
Duncan has been recorded by the Social Security Administration since the 19th century dataset began. In total, 21,043 babies were given the name in the United States between 1880 and 2024. After adjusting each birth cohort for survival to today, an estimated 17,200 bearers are still living — roughly 1 in 19,872 Americans. The name's strongest decade shapes how old most Duncans 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 Duncan in the US?
An estimated 17,200 people named Duncan are living in the United States today, based on SSA birth records from 1880 to 2024 adjusted for survival. That makes Duncan rare — about 1 in 19,872 Americans.
Is Duncan a boy or girl name?
In SSA records, Duncan is 100% male and 0% female, so it is predominantly a male name.
When was Duncan most popular?
Duncan peaked in 1997, when 644 babies were given the name. Its current trend is declining compared with the previous decade.
How rare is the name Duncan?
Duncan ranks #1,737 of 104,819 first names recorded by the SSA, with a rarity score of 50 out of 100 (higher means rarer).