Jill
Meaning
short form of Gillian/Juliana, traditionally 'youthful'
Jill around the world
One shared root links 13 names across 5 languages.
Shared root: the Roman family name Iulius, of debated sense, linked since antiquity to Jove and to "downy-bearded", flowing through Julian and Juliana into a wide medieval family
The constellation
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Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Jill peaked in the 1960s and the 1970s in nearly equal measure.
See popularity in Brazil
Popularity in Brazil
48 people · the #68,557 first name in Brazil · median age 39
Source: IBGE, Censo Demográfico 2022
When you meet Jill
People given the name Jill in the United States span the generations: the middle half were born anywhere from 1950 to 1979. Age is the one thing the name won't tell you.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
The Jill deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Jill truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Jill fits with your family’s names and surname.
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