first name
DUNCAN
of 53,615 first names recorded in the 2020 Census
Of the 17,445 people named Duncan, 83.3% reported their origin as White, 5.6% as Black and 5.2% as two or more races. 99.4% are male. These count how people described themselves on the 2020 Census, not where the name comes from.
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Duncan peaked in 1997, when 644 babies got the name.
At least 21,230 babies have been given the name since 1880. Years SSA withheld, because fewer than 5 were born, are skipped rather than drawn as zero. * 2025 is the newest year published and it undercounts: a card application is filed some time after a birth.
Duncan by decade
Among all names given to American babies, its best decade was the 1880s, when it ranked #1,053. The largest share of babies named Duncan, 31.5%, were born between 1997 and 2012, as Generation Z.
Rank counts both sexes together, among every name SSA recorded that decade; the number under it is births. The 2020s run only to 2025. Generation years follow Pew Research Center, which has not named a generation after 2012.
Where Duncan is most common
Compared with all babies born in each state since 1910, Duncan has been most common in Washington (2.6×), Utah (2.5×), and Massachusetts (2.2×), and least common in Arkansas (0.22×).
15,185 births recorded by state, 1910–2025. 2× means twice as common as nationally. States with fewer than 30 such births are left blank, and SSA withholds any year with fewer than 5 in a state, so small states read low.
Either side of Duncan
Also a last name
As a last name, Duncan ranks #222 of 156,621, with 129,708 people. See Duncan as a last name
Compare
🔎 DUNCAN 🟦🟦🟦🟦🟦🟦🟦🟦⬜⬜ 1 in 17,313 Americans Rarer than 76.7% of us Peaked in 1997 with 644 babies Beat that 👇 https://howrareismy.name/first/duncan/