UK girl's name
Millie
A diminutive form of names like Millicent or Camilla, meaning work or strife.
For 2026, the newest official UK baby-name figures on this page are from 2024. That release is the current official benchmark rather than a forecast.
Millie is a girl's name in the UK records. People looking for Millie popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #27, with 1,255 babies registered with the name. Its strongest year in the published records was 2004, with 2,425 births.
This profile covers 44,390 England and Wales registrations across 29 recorded years from 1996 to 2024. The figures come from ONS England and Wales, NRS Scotland and NISRA Northern Ireland, so the page is a view of published baby-name registrations rather than a forecast or a live count of people using the name today.
The latest count is about 52% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 48,990 living people in the UK are called Millie. This uses published birth registrations from England and Wales, Scotland and Northern Ireland, then applies ONS national life tables to estimate how many are likely still alive. It does not forecast extra births for 2025 or 2026.
Key insights
- • Millie ranked #27 for girls in England and Wales in 2024, with 1,255 registrations.
- • The name peaked in 2004, when 2,425 girls were registered as Millie.
- • Millie ranks best in Scotland in the latest published regional snapshot for that area, where it placed #5 in 2024.
- • About 48,990 living people in the UK are estimated to have Millie as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#27
2024
Births in 2024
1,255
Latest year
Peak year
2004
2,425 births
Estimated living
48,990
2026
Meaning
What does Millie mean?
Millie is a diminutive form of the feminine given name Millicent, which is derived from the Germanic words "mildi" meaning "gentle" and "centi" meaning "bright" or "brilliant." The name Millicent first emerged in the Middle Ages, around the 12th century, and was particularly popular among the Norman aristocracy in England.
The earliest recorded instances of the name Millie can be traced back to the 13th century, where it appeared as a shortened form of Millicent in various historical documents. One of the earliest notable figures with the name Millie was Millie de Cantilupe, a 13th-century English noblewoman who was a member of the influential Cantilupe family.
In the 16th century, the name Millie gained popularity as a standalone name, rather than just a diminutive. It became particularly fashionable in England and Scotland during this period. One notable Millie from this era was Millie Napier, a Scottish noblewoman who was the wife of Sir Archibald Napier, the 7th Lord Napier (1534-1608).
During the 17th century, the name Millie continued to be used in various parts of Europe, albeit less frequently than in previous centuries. One notable Millie from this time was Millie Gwyn, a renowned English actress and mistress of King Charles II, who lived from 1642 to 1687.
In the 18th century, the name Millie experienced a resurgence in popularity, particularly in the United States. One notable figure with this name was Millie Disosway, an American woman who was captured by Native Americans during the Revolutionary War and later published a captivity narrative in 1788.
In the 19th century, the name Millie remained in use, though it was not among the most popular names of the era. One notable Millie from this period was Millie Christine McKoy, better known as Christine Nilsson, a Swedish operatic soprano who performed extensively in Europe and the United States between 1864 and 1888.
As you can see, the name Millie has a rich history spanning several centuries and cultures, with notable figures bearing this name in various fields, from nobility and acting to literature and music.
Sourced from namecensus.com.
Popularity
Millie over time
The chart below shows babies named Millie registered in England and Wales in the years where the name appears in the published records, from 1996 to 2024. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.
For Millie, the clearest high point is 2004. The latest England and Wales figure is 1,255 births in 2024, compared with 2,425 at the peak.
Babies born per year
Decades
Millie by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Millie was a short-lived spike or a name that stayed in regular use. Average rank is calculated only from years where a published rank exists.
| Decade | Average rank | Total births | Years covered |
|---|---|---|---|
| 2020s | #26 | 7,065 | 5 |
| 2010s | #33 | 15,847 | 10 |
| 2000s | #29 | 18,945 | 10 |
| 1990s | #89 | 2,533 | 4 |
Geography
Where Millie is most common
The bars show the latest published local birth counts for Millie. They are useful for spotting where the name is showing up in real numbers, while the rank beside each bar shows how strongly it performs inside that region.
Millie ranks best in Scotland in the latest published regional snapshot for that area, where it placed #5 in 2024.
Across the UK
Millie in Scotland and Northern Ireland
Scotland (NRS)
#5 in 2024
29 years of NRS records, 4,544 total registered
Northern Ireland (NISRA)
#150 in 2024
23 years of NISRA records, 313 total registered
Notable bearers
Famous people named Millie
-
Millie Couzens
sport cyclist
British cyclist
2003-
-
Millie Prior
basketball player
college basketball player (2021–2022) Fordham
2003-
-
Millie Innes
child actor
British actress
2001-
-
Millie B
rapper; influencer; TikToker
English rapper and TikToker
2000-
-
Millie Knight
alpine skier
British Paralympic athlete
1999-
-
Millie Spalding
acrobatic gymnast
British gymnast
1998-
-
Millie Chandarana
association football player
English association football player (born 1997)
1997-
-
Millie Farrow
association football player
English association football player
1996-
Related
Names similar to Millie
- Megan 70,884
- Mia 67,204
- Molly 47,734
- Maisie 32,671
- Matilda 29,965
- Maya 26,445
- Madison 18,441
- Maria 17,304
- Mollie 15,914
- Martha 15,116
- Maddison 14,918
- Maryam 14,781
FAQ
Millie: questions and answers
How popular is the name Millie in the UK right now?
In 2024, Millie was ranked #27 for girls in England and Wales, with 1,255 births registered.
When was Millie most popular?
The peak year on record was 2004, with 2,425 babies registered as Millie in England and Wales.
What is the meaning and origin of Millie?
A diminutive form of names like Millicent or Camilla, meaning work or strife.
How many people are called Millie in the UK?
A total of 44,390 babies have been registered as Millie across the 29 years of ONS England & Wales records shown here, plus 4,544 more in Scotland and 313 in Northern Ireland.
Where is Millie most common?
In the latest published local rankings, Millie ranks best in Scotland, where it placed #5 in 2024. The regional bars on this page use birth counts, so they also reflect the size of each region.
Which records is this page based on?
The England and Wales timeline uses ONS baby-name records. Scotland figures come from NRS and Northern Ireland figures come from NISRA. Counts are registrations in published baby-name files. The living estimate uses those birth registrations with ONS national life tables.