Sun
Recorded 1902–2025 · United States
Sun was most popular in 2022, when 28 American babies were given the name — ranking #8,292 that year. In 2025 it ranked #10,985, with 18 births. Across 1880–2025 the Social Security Administration has recorded 1,007 people named Sun.
Sun over time
How old is the name Sun?
Sun first appears in Social Security Administration records in 1902, which makes it about 123 years old as a recorded American name. It has been recorded in 84 of the 124 years since.
How many people are named Sun?
The Social Security Administration has recorded 1,007 American births named Sun 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 875 are estimated to be alive today.
How many babies were named Sun in 2025?
18 American babies were named Sun in 2025, ranking #10,985 that year.
Is Sun getting more or less popular?
Sun is rising. Across 2021–2025 it averaged 21 births a year, against 9 a year across 2011–2015 — a change of +140% 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 Sun a boy’s or a girl’s name?
Across the whole record Sun is a unisex name — 50.0% of the 1,007 Americans given it were girls and 50.0% were boys. It changed hands: since 2022 it has gone mainly to boys, having gone mainly to girls before that. In births since 2016 it is 23% girls and 77% 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 Sun?
Roughly 875 Americans named Sun are alive today — 87% of everyone ever recorded with the name. The median is 38 years old, and half are between 19 and 49. That is a wide band, the mark of a name in steady use across generations rather than a passing fashion.
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 Sun is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See Sun on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org