Cassidy

25,508 people in the United States were counted with the surname Cassidy in the 2020 census, making it the 1,347th most common in the country. That is about one person in 11,700.

By the numbers

People: 25,508
Rank: 1,347th
How common: 1 in 11,700
Per 100,000: 8.5

Where the name comes from

Origin Irish

From the Irish surname, Anglicized from Ó Caiside (“descendant of Caiside”), from cas (“curly-haired”).

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

Who bears the name

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

White, not Hispanic 89.9%
Hispanic or Latino 3.8%
Two or more races, not Hispanic 3.2%
Black, not Hispanic 2.0%
Asian or Pacific Islander, not Hispanic 0.9%
American Indian or Alaska Native, not Hispanic 0.3%

Notable people called Cassidy

Katie Cassidy (born 1986)American actress and singer
David Cassidy (1950–2017)American actor and singer
Eva Cassidy (1963–1996)American singer
Joanna Cassidy (born 1945)American actress
Butch Cassidy (1866–1908)American Old West outlaw
Bill Cassidy (born 1957)American physician and politician
Edward Cassidy (1924–2021)Australian Roman Catholic cardinal
Christopher Cassidy (born 1970)American astronaut

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

Surnames like Cassidy

Also a first name

Cassidy has been given to 64,583 American babies as a first name since 1968, peaking in 1999. See it as a given name.

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.