Recorded 1906–2025 · United States
Jill was most popular in 1966, when 7,886 American babies were given the name — ranking #91 that year. In 2025 it ranked #9,947, with 21 births. Across 1880–2025 the Social Security Administration has recorded 208,572 people named Jill.
Jill first appears in Social Security Administration records in 1906, which makes it about 119 years old as a recorded American name. It has been recorded in 115 of the 120 years since.
The Social Security Administration has recorded 208,572 American births named Jill 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 184,732 are estimated to be alive today.
21 American babies were named Jill in 2025, ranking #9,947 that year.
Jill is falling. Across 2021–2025 it averaged 21 births a year, against 47 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 Jill is a girl’s name — 99.8% of the 208,572 Americans given it were girls and 0.2% 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 184,732 Americans named Jill are alive today — 89% of everyone ever recorded with the name. The median is 58 years old, and half are between 49 and 65.
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.
Latin · short form of Gillian
How much more common the name is in each state than across the country as a whole.
See Jill on the interactive charts
About · Privacy · Contact
Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org