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Every US first name since 1880, charted like a stock. Type yours, then your mom’s, then the whole group chat.
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NAMES LIKE CILLIAN
Same rise and fall as Cillian, around the same years.
WHERE CILLIAN IS POPULAR · 2024
In 2024, Cillian ranked highest in Alaska (#294) and lowest in Texas (#1,729). 19 states had fewer than 5 babies with the name, too few to list.
Tap a state to see its rank and top names.
MARKET MOVERS · 10 YEARS
Cillian name popularity
Cillian has been given to 4,090 babies in the United States since 1995.
It peaked in 2024, when 674 babies got the name, and its best rank was #935 in 2024.
In 2025, 595 babies were named Cillian (#1,018 in the country), 12% below the peak. That is up 392% from 2015.
Almost every Cillian is a boy.
An estimated 4.1K people named Cillian are alive in the US today, with a median age of 4.
HOW IT WORKS
The chart is the number of US babies given the name each year, from the Social Security Administration’s public baby-name files (names given to 5+ babies in a year). The “all-time high” is the name’s biggest year. “Holders” and “median holder age” are rough estimates that apply average US survival rates to each birth year, so they ignore immigration and name changes.
Lookups run in your browser. We don’t keep a list of the names people look up.