Recorded 1912–2025 · United States
Ilia was most popular in 2025, when 90 American babies were given the name — ranking #3,792 that year. In 2025 it ranked #3,792, with 90 births. Across 1880–2025 the Social Security Administration has recorded 1,077 people named Ilia.
Ilia first appears in Social Security Administration records in 1912, which makes it about 113 years old as a recorded American name. It has been recorded in 72 of the 114 years since.
The Social Security Administration has recorded 1,077 American births named Ilia 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 1,020 are estimated to be alive today.
90 American babies were named Ilia in 2025, ranking #3,792 that year.
Ilia is rising. Across 2021–2025 it averaged 41 births a year, against 23 a year across 2011–2015 — a change of +81% 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.
Across the whole record Ilia is a unisex name — 76.2% of the 1,077 Americans given it were girls and 23.8% were boys. It changed hands: since 2024 it has gone mainly to boys, having gone mainly to girls before that. In births since 2016 it is 52% girls and 48% 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.
Roughly 1,020 Americans named Ilia are alive today — 95% of everyone ever recorded with the name. The median is 20 years old, and half are between 8 and 41. 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.
See Ilia on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org