Millie
Girl name · #73 in 2025 · Uniqueness 12/100
Millie ranks #73 among American girls' names as of 2025, with 3,353 newborns given the name that year. A decade ago it stood at #469, so the name has been rising over the past ten years. Roughly one in every 537 girls born in 2025 was named Millie.
The 145-year story
Millie first appears in the Social Security records in 1880, when 105 girls received the name. Its all-time peak is essentially right now: 2025, with 3,353 babies and a rank of #73. Names at their peak can keep climbing — or be one trend cycle from the long slide that eventually hits most popular names. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Millie per year, 1880–2025. Source: SSA.
Unlock the 5-year forecast and compare Millie against up to 5 other names.
Uniqueness: will there be another Millie in class?
Millie scores 12 out of 100 on our uniqueness scale, which blends current rarity with five-year momentum — putting it in the "popular" band. A low score means broad familiarity: teachers will spell it right, and your child may share it with a classmate. For many families that's a feature, not a bug.
Where Millie is most common
Geography matters for names, and Millie is no exception. In 2025 the states with the most Millies were TX (248), CA (195), FL (152), OH (136), TN (132). Raw counts naturally favor populous states, but the spread still hints at where the name is part of the local naming culture.
Names like Millie
Statistically, parents drawn to Millie tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Maeve, Hallie, Charlie, Maisie, and Margot.
MaeveHallieCharlieMaisieMargotJosieEloiseEllie
Rank history (last 25 years)
| Year | Babies named Millie | Rank |
|---|---|---|
| 2025 | 3,353 | #73 |
| 2024 | 2,920 | #87 |
| 2023 | 2,564 | #105 |
| 2022 | 2,197 | #128 |
| 2021 | 1,697 | #173 |
| 2020 | 1,504 | #190 |
| 2019 | 1,317 | #240 |
| 2018 | 1,098 | #304 |
| 2017 | 895 | #353 |
| 2016 | 743 | #434 |
| 2015 | 682 | #469 |
| 2014 | 618 | #507 |
| 2013 | 481 | #592 |
| 2012 | 385 | #721 |
| 2011 | 330 | #812 |
| 2010 | 311 | #861 |
| 2009 | 323 | #861 |
| 2008 | 261 | #1011 |
| 2007 | 151 | #1526 |
| 2006 | 135 | #1590 |
| 2005 | 131 | #1553 |
| 2004 | 145 | #1425 |
| 2003 | 174 | #1218 |
| 2002 | 91 | #1934 |
| 2001 | 84 | #2013 |
Frequently asked questions
Is Millie a popular girl name?
Millie ranked #73 among girls in 2025 with 3,353 babies given the name — firmly in the top 100, so yes, it’s a popular choice. Ten years earlier it ranked #469.
When was the name Millie most popular?
Millie peaked in 2025, when 3,353 American girls received the name (ranked #73 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Millie?
In 2025, roughly 1 in 537 newborn American girls was named Millie. It scores 12/100 on our uniqueness scale (rarity blended with momentum), which we classify as "popular".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.