NameData
Name file · Boy · SSA 1880–2024
Duncan
Duncan is a boy's name.
● Holding steadyGeneration Z
21,032
Total named
34
Avg ageestimated
1997
Peak year
#1,101
Rank in 2024
Duncan peaked in 1997, when about 644 boys were given the name. Today it ranks 1,101st for boys, holding steady. Most people named Duncan today are around 34 years old (estimated) — squarely Generation Z. In all, roughly 21,032 boys have been named Duncan since record-keeping began in 1880.

📈 Popularity over time

How many boys were named Duncan each year, 1880–2024.
Peak: 1997644 boys18801900192019401960198020002020

↔ Names from the same era

Other boys' names that peaked around the same time as Duncan:
NehemiahAronReeceKristianBaileyUriel
Data: U.S. Social Security Administration (public domain), 1880–2024. Average age is estimated from a survival curve, not actuarial tables.
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How we read a name

Every figure on this page comes from the U.S. Social Security Administration's public-domain record of names given to babies born in the United States from 1880 to 2024. The SSA only counts a name in a year if at least five babies received it.

Popularity & rank

The trajectory shows how many boys were named Duncan each year. The peak year is simply the year that count was highest, and the rank is where the name sat among all boys' names in 2024.

Estimated average age

We estimate the typical age of living people with this name by combining how many were born each year with a rough survival curve. It's a useful approximation for "how old does this name feel," not a precise actuarial figure — that's why we always label it estimated.

For general informational and entertainment purposes only. Counts reflect U.S. SSA card applications and may differ from total births. Figures are rounded.