Koo

Koo is the 6,365th most common surname in the United States, shared by 5,141 people at the 2020 census. That is about one person in 58,100.

By the numbers

People: 5,141
Rank: 6,365th
How common: 1 in 58,100
Per 100,000: 1.7

Where the name comes from

Origin Cantonese

Romanization of yue.

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

Who bears the name

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

Asian or Pacific Islander, not Hispanic 88.7%
White, not Hispanic 4.5%
Two or more races, not Hispanic 3.7%
Hispanic or Latino 2.6%
Black, not Hispanic 0.6%
American Indian or Alaska Native, not Hispanic 0.02%

Notable people called Koo

Wellington Koo (1888–1985)Diplomat and former President of the Republic of China
Louis Koo (born 1970)Hong Kong actor and film producer
Joseph Koo (1931–2023)Hong Kong composer
Koo Kien Keat (born 1985)Malaysian badminton player
Kaija Koo (born 1962)Finnish singer

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

Surnames like Koo

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.