Millie is a popular choice in the UK, ranked #36 in 2025. There's a good chance they'll share their name with at least one classmate throughout school.
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UK Rank 2025
#36
US Rank #73
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About the Name Millie
Millie ranked #36 in 2025, down from its peak of #18 in 2022 — still a familiar name, but past its high point. The name has been a consistent presence in UK records since 1996. It has spent 29 of the last 30 years inside the UK top 100 — a mark of enduring mainstream appeal.
Millie is a very popular name in the UK — yet a class of 28 is small enough that your child will very likely be the only Millie on the register.
In the US it sits at #86 — notably more popular in the UK than across the Atlantic.
⭐ Famous People Named Millie
Millie Odhiambo — Millie Grace Akoth Odhiambo Mabona is a Kenyan politician.
Millie Farrow — Millie Laura Farrow is an English professional footballer who plays as a forward for Central Coast Mariners in the A-League Women competition.
Millie Gibson — Amelia Eve Gibson, known as Millie Gibson, is an English actress.
Biographical summaries are shortened from Wikipedia and are used under the CC BY-SA 4.0 licence; those summaries remain available under that same licence.
Frequently Asked Questions
Common questions about the name Millie
Unlikely. With around 1,080 UK babies named Millie per year, your child will almost certainly be the only Millie in their class, and possibly the only one in the whole school.
Millie has been fairly steady, ranked #36 in 2025 against #33 in 2020. Its best recorded position was #18 in 2022.
Millie is more popular in the UK (#27) than in the US (#86). Names with strong rankings in both countries tend to have broad cross-cultural appeal, working well for international families or those with ties to both nations.
Notable people named Millie include: Millie Odhiambo, Millie Farrow and Millie Gibson. Short summaries for each appear below.
Millie ranks #86 in the US (2024), making it comfortably inside the American top 100. It's well-liked on both sides of the Atlantic.
1,080
UK babies named Millie (2025)
~0.0
Expected classmates with this name (class of 28)
~0.6
In a school of 600
↓ 3 places
Rank change (last 5 years)
🏫 Who else is in the room?
In a typical UK class of 28, highlighted children share the name Millie
Almost certainly the only Millie in the class
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UK Popularity (1996–2025)
Rank and birth count · ONS official data
US Popularity (2020–2025)
Rank · SSA official data
✨ Similar names to Millie
Names with a similar style — each with their own classroom story