Name Generator
How popular is the name Jillian?
Births per year, rank history and how many Jillians are alive today.
Jillian (female) is a rare spelling of the girls' name Gillian in England and Wales, ranked 5927th in 2025 and given to 3 babies. This spelling of the name peaked in 1996, when 7 babies were given the name, the 2096th most popular that year. It has declined since 1996; the 2025 figure is roughly 43% of its peak.
Across all spellings of the name, the Gillian you are most likely to meet is around 72 years old. Half of all Gillians born in England and Wales are between 64 and 77, and there are at least 83,000 of them alive today. If you walk into a room of 100 females, there's roughly a 23% chance that at least one of them will be called Gillian.
How many babies are named Jillian each year?
Includes all spellings: Jillian, Gillian. Figures before 1996 are estimates.
Where does the Jillian spelling rank?
Where does the Gillian spelling rank?
Where this data comes from
Figures from 1996 onwards are the Office for National Statistics' annual baby-name registrations for England and Wales, which record every name given to three or more babies in a year. Figures before 1996 are estimates: the ONS published only top-100 rankings at ten-year intervals back to 1904, so counts for those years are modelled from the rankings, calibrated against Douglas Galbi's long-run research into English name frequencies, and shown with an uncertainty band. Estimates of living bearers combine these birth figures with national life tables and ONS mid-year population estimates.
One limit worth naming: these figures count names as registered at birth. Anyone who changes their name later in life - including trans people, and anyone who adopts a different name by deed poll or simply by use - is not reflected here. Birth registrations record where a name began, not the name a person lives with.
Common questions
When was the name Jillian most popular?
The most popular form of the name, Gillian, peaked in 1954, when around 4,200 babies in England and Wales were given the name. The Jillian spelling itself peaked in 1996, with 7 babies.
How many people are called Jillian?
At least 83,000 people named Jillian in any spelling born in England and Wales are alive today.
How old is the typical Jillian?
Most living Jillians are between 64 and 77; the most common age is about 72.
Is Jillian becoming more or less popular?
Well past its peak: today's figures are a fraction of the 1954 peak, though numbers have levelled off in recent years.