Recorded 1933–2025 · United States
Lia was most popular in 2024, when 1,610 American babies were given the name — ranking #432 that year. In 2025 it ranked #444, with 1,526 births. Across 1880–2025 the Social Security Administration has recorded 28,516 people named Lia.
Lia first appears in Social Security Administration records in 1933, which makes it about 92 years old as a recorded American name. It has been recorded in 81 of the 93 years since.
The Social Security Administration has recorded 28,516 American births named Lia 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 28,080 are estimated to be alive today.
1,526 American babies were named Lia in 2025, ranking #444 that year.
Lia is rising. Across 2021–2025 it averaged 1,369 births a year, against 885 a year across 2011–2015 — a change of +55% 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 Lia is a girl’s name — 100.0% of the 28,516 Americans given it were girls and 0.0% were boys. In births since 2016 it is 100% girls and 0% 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 28,080 Americans named Lia are alive today — 98% of everyone ever recorded with the name. The median is 12 years old, and half are between 6 and 22.
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.
How much more common the name is in each state than across the country as a whole.
See Lia on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org