Millie
Girl name · English · German · Greek
Meaninggentle strength · English form of Mildred
- US rank
- #73
- Syllables
- 2
- Peak
- #73 in 2025
3,353 babies were named Millie in the US in 2025. It has climbed 117 places in five years.
Found on lists
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US births per million girls, 1880–2025
Most popular states (2025)
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Millie you might not know, from US birth records and Wikipedia. Handy for convincing a partner, or a grandparent.
Famous Millie
Millie Hughes-Fulford
Astronaut, academic researcher (1945-2021)
Choose Millie and your child shares a first name with Millie Hughes-Fulford, an astronaut, academic researcher. A ready-made answer when someone asks “Millie, like who?” Millie Hughes-Fulford's Wikipedia article is available in 30 languages, a good sign of just how widely known they are.
Read about Millie Hughes-Fulford on Wikipedia (opens in a new tab)Photo: NASA, Public domain (opens in a new tab), via Wikimedia Commons
- How commonAbout 1 in every 479 baby girls born in the US in 2025 was named Millie, 3,353 babies in all. In a school of 500 kids, there'd probably be one other Millie.
- HistoryMillie has been in use since at least 1880, the first year US birth records were kept. That's 145 years of Millies, and counting.
- Best yearMillie is at its all-time high right now: #73 in 2025.
- Then vs nowMillie is 46× more common today than it was in 2000. In 2000 it was given to about 1 in 21,882 baby girls; in 2025, about 1 in 479.
- TrendMillie has climbed 117 places in the US rankings over the last five years and now sits at #73. Fast risers like this often keep climbing, so expect to hear it more.
- Where it's lovedMillie is most popular in Utah, where it ranks #14, followed by Wyoming (#15) and Idaho (#17). It makes the top 1,000 in almost every state.
- MeaningMillie is an English form of Mildred, which means “gentle strength”. Our records link it to English, German and Greek roots.
About the name Millie
Millie is a girl name of English, German and Greek origin meaning “gentle strength”. It has 6 letters and 2 syllables, starting with M and ending in “-lie”. US birth records list Millie for girls from 1880 to 2025, in 146 of those 146 years. Its best year was 2025, when it ranked #73 among girl names. In 2025 it ranked #73, with 3,353 babies.
Origin:English namesGerman namesGreek names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1880s | 1,177 | 850 girls |
| 1890s | 890 | 1,123 girls |
| 1900s | 686 | 1,459 girls |
| 1910s | 518 | 1,932 girls |
| 1920s | 323 | 3,094 girls |
| 1930s | 245 | 4,079 girls |
| 1940s | 160 | 6,238 girls |
| 1950s | 101 | 9,920 girls |
| 1960s | 70 | 14,335 girls |
| 1970s | 48 | 20,890 girls |
| 1980s | 27 | 37,147 girls |
| 1990s | 26 | 38,052 girls |
| 2000s | 85 | 11,745 girls |
| 2010s | 395 | 2,531 girls |
| 2020s | 1,465 | 683 girls |
Other spellings of Millie
More English girl names
- Girl name: Olivia · olive tree
- Girl name: Charlotte · free
- Unisex name: Harper · harp player
- Girl name: Elizabeth · God is my oath
- Girl name: Lily · lily flower
- Girl name: Lucy · light
- Girl name: Lainey · possibly light
- Girl name: Scarlett · scarlet red
Questions about the name Millie
What does the name Millie mean?
Millie means “gentle strength” in English, as a form of Mildred.
What is the origin of the name Millie?
Millie has English, German, Greek roots in our records. Other English names include Olivia, Charlotte, Harper.
Is Millie a boy or girl name?
Millie is a girl name.
How popular is the name Millie?
Millie ranked #73 for US girls in 2025, given to 3,353 babies. Its best year was 2025 (#73).