How common is the last name Duncan?

129,708 people in the United States have the last name Duncan, about 1 in 2,304. It ranks #222 of 156,621 last names in the 2020 Census.

last name

DUNCAN

#222

of 156,621 last names recorded in the 2020 Census

People
129,708
About
1 in 2,304
This common or more
23.5%
Who bears it

Of the 129,708 people with the last name Duncan, 72.9% reported their origin as White, 17.3% as Black and 4.6% as two or more races. These count how people described themselves on the 2020 Census, not where the name comes from.

Either side of Duncan

#220 Hudson · 129,935#221 Armstrong · 129,826#223 Lane · 129,618#224 Riley · 129,431

Spelled almost the same

2 last names in the 2020 Census spelled within a letter or two of Duncan, most common first.

#8,915 Dungan · 3,523#112,515 Dunican · 166

Also a first name

As a first name, Duncan ranks #1,737 of 53,615, with 17,445 people. As a baby name it peaked in 1997, with 644 births. See Duncan as a first name

Compare