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Gilliam

28,041 people in the United States were counted with the surname Gilliam in the 2020 census, making it the 1,233rd most common in the country. That is about one person in 10,700.

By the numbers

People
28,041
Rank
1,233rd
How common
1 in 10,700
Per 100,000
9.4

Where the name comes from

Origin a patronymic

From a medieval variant of the given name William.

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

Who bears the name

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

Notable people called Gilliam

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

Surnames like Gilliam

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.