LAST NAME · 2020 CENSUS
Colby
Colby is the 3,336th most common last name in the United States. In the 2020 Census, 10,566 people carried it — about 3.5 of every 100,000 people. Most people named Colby are White.
WHO CARRIES THIS NAME · 2020
White89.9%
Multiracial3.6%
Hispanic3.6%
Black1.6%
Asian American1.0%
Native American0.3%
Shares are tabulated by the US Census Bureau, not modeled. Methodology.
RANK OVER TIME
1990
#2,642
12,435
2000
#3,015
11,023
2010
#3,204
11,278
2020
#3,336
10,566