Dyllan
Recorded 1986–2025 · United States
Dyllan was most popular in 1999, when 187 American babies were given the name — ranking #1,862 that year. In 2025 it ranked #10,985, with 18 births. Across 1880–2025 the Social Security Administration has recorded 3,802 people named Dyllan.
Dyllan over time
How old is the name Dyllan?
Dyllan first appears in Social Security Administration records in 1986, which makes it about 39 years old as a recorded American name. It has been recorded in 40 of the 40 years since.
How many people are named Dyllan?
The Social Security Administration has recorded 3,802 American births named Dyllan 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 3,732 are estimated to be alive today.
How many babies were named Dyllan in 2025?
18 American babies were named Dyllan in 2025, ranking #10,985 that year.
Is Dyllan getting more or less popular?
Dyllan is falling. Across 2021–2025 it averaged 26 births a year, against 88 a year across 2011–2015 — a change of -71% 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 Dyllan a boy’s or a girl’s name?
Across the whole record Dyllan is mostly a boy’s name — 13.2% of the 3,802 Americans given it were girls and 86.8% were boys. In births since 2016 it is 27% girls and 73% 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 Dyllan?
Roughly 3,732 Americans named Dyllan are alive today — 98% of everyone ever recorded with the name. The median is 23 years old, and half are between 16 and 29.
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 Dyllan is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See Dyllan on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org