Cosby

At the 2020 census, 10,111 Americans bore the surname Cosby — 3,449th out of 156,621 surnames on file. That is about one person in 29,600.

By the numbers

People: 10,111
Rank: 3,449th
How common: 1 in 29,600
Per 100,000: 3.4

Where the name comes from

From the Old English personal name *Cossa + Old Norse býr (“farm; settlement”).

Etymology from Wiktionary, used under CC BY-SA 4.0.

Who bears the name

How people with the surname Cosby described their own race and Hispanic origin at the 2020 census:

White, not Hispanic 46.2%
Black, not Hispanic 43.2%
Two or more races, not Hispanic 5.7%
Hispanic or Latino 3.8%
Asian or Pacific Islander, not Hispanic 0.5%
American Indian or Alaska Native, not Hispanic 0.5%

Notable people called Cosby

Bill Cosby (born 1937)American actor and comedian

People named Cosby with articles in the most Wikipedia languages. Data from Wikidata (CC0).

Surnames like Cosby

Try it on yourself

Source: US Census Bureau, Frequently Occurring Surnames, 2020. The Census describes the file as the surnames borne by 100 or more people; rarer names are not published. The line is not quite exact, and 617 published names come in under it, the smallest at 92 people. Race and Hispanic origin are self-reported. Rates are worked out against the 298.9 million people the file's own figures are calculated on, which is fewer than the census counted in all: the difference is everyone whose surname was too rare to publish.