How rare is the last name Colby?

10,566 people in the United States have the last name Colby, about 1 in 28,289. It ranks #3,336 of 156,621 last names in the 2020 Census.

last name

COLBY

#3,336

of 156,621 last names recorded in the 2020 Census

People
10,566
About
1 in 28,289
This common or more
53.8%
Who bears it

Of the 10,566 people with the last name Colby, 89.9% reported their origin as White, 3.6% as two or more races and 3.6% as Hispanic or Latino. These count how people described themselves on the 2020 Census, not where the name comes from.

Either side of Colby

#3,334 South · 10,580#3,335 Melo · 10,576#3,337 Ref · 10,563#3,338 Fultz · 10,557

Spelled almost the same

One last name in the 2020 Census spelled within a letter or two of Colby, most common first.

#150,935 Coulby · 108

Also a first name

As a first name, Colby ranks #908 of 53,615, with 49,553 people. As a baby name it peaked in 2001, with 3,979 births. See Colby as a first name

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