Dillion
Recorded 1979–2025 · United States
Dillion was most popular in 1992, when 354 American babies were given the name — ranking #1,164 that year. In 2025 it ranked #11,378, with 17 births. Across 1880–2025 the Social Security Administration has recorded 3,661 people named Dillion.
Dillion over time
How old is the name Dillion?
Dillion first appears in Social Security Administration records in 1979, which makes it about 46 years old as a recorded American name. It has been recorded in 47 of the 47 years since.
How many people are named Dillion?
The Social Security Administration has recorded 3,661 American births named Dillion between 1880 and 2025. That is recorded US births, not a world population — it counts people issued a Social Security number at birth in the United States. Of those, roughly 3,567 are estimated to be alive today.
How many babies were named Dillion in 2025?
17 American babies were named Dillion in 2025, ranking #11,378 that year.
Is Dillion getting more or less popular?
Dillion is falling. Across 2021–2025 it averaged 20 births a year, against 34 a year across 2011–2015 — a change of -42% over the decade.
Measured on recorded births. American births overall have fallen since 2007, so most established names lose births over any recent decade — a name can shed births and still hold its rank. Compare the rank above, which is measured against the other names of the same year.
Is Dillion a boy’s or a girl’s name?
Across the whole record Dillion is a boy’s name — 0.2% of the 3,661 Americans given it were girls and 99.8% were boys. In births since 2016 it is 2% girls and 98% boys.
Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.
How old is someone named Dillion?
Roughly 3,567 Americans named Dillion are alive today — 97% of everyone ever recorded with the name. The median is 28 years old, and half are between 22 and 33. That is a narrow band: Dillion arrived and faded within about a decade rather than staying in steady use.
An estimate, not a count. Recorded births are carried forward through the Social Security Administration’s 2023 period life table, by age and sex. That table describes mortality in one recent year, so it credits the oldest cohorts with today’s survival rather than the harsher rates they actually lived through — the further back a name peaked, the more this will overstate how many remain. It counts people issued a Social Security number at birth, not immigrants who arrived later.
Where Dillion is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See Dillion on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org