girl's name
Millie
MIL-ee
- Origin English
- Gender Girl
- Syllables 2
- Letters 6
- Popularity Top 100 (US)
- Births on record 100,956
the United States
#73
2025 births
Millie is a girl's name that began as a pet form of longer names — chiefly Millicent, Mildred, Amelia and Camilla — and is now given in its own right. Because those parent names have different roots, Millie has no single inherited meaning.
- Millie is a name of English origin.
- Peaked in 2025, when 3,353 babies were given the name.
- It has been rising over the past decade.
- Today about 1 in 989 babies in the United States is given this name.
- 2 syllables, with the stress on syllable 1.
Millie over time
Births per decade in the United States, 1880s to 2020s. The striped bar is the 2020s, still in progress — it covers 2020 to 2025, not a full ten years.
Show the numbers
| Decade | Births |
|---|---|
| 1880s | 1,527 |
| 1890s | 1,959 |
| 1900s | 1,995 |
| 1910s | 4,190 |
| 1920s | 3,978 |
| 1930s | 2,633 |
| 1940s | 2,282 |
| 1950s | 1,932 |
| 1960s | 1,289 |
| 1970s | 741 |
| 1980s | 462 |
| 1990s | 472 |
| 2000s | 1,578 |
| 2010s | 6,860 |
| 2020s (to 2025) | 14,240 |
What Millie means
Millie's meaning depends on the parent name. Millicent gives "strong in work," Mildred "gentle strength," Amelia "industrious," and Camilla a Roman ceremonial attendant. Sources listing "gentle strength" and "strong in work" together are reporting two different parents.
Where Millie comes from
Millie is an English diminutive formed with the -ie ending that also produces Katie, Josie and Maggie. Its parents are several and unrelated: Millicent, from the Germanic amal, work, and swinth, strength; Mildred, from the Old English milde, gentle, and thryth, strength; Amelia, from the Germanic amal; and Camilla, from the Latin. Because the short form is shared, reference sites list meanings from all of them, which is why the same page can offer both gentle strength and strong in work. Millie became independent in the nineteenth century and returned sharply in Britain from the 1990s, part of the wider revival of vintage nicknames as full names.
How popular is Millie?
In 2025, Millie was given to 3,353 babies in the United States, ranking #73 that year. It is one of the most popular names in the United States.
Where Millie is used
US figures omit any name given to fewer than five babies in a year, so the rarest names are absent from the source rather than absent from use. Data & sources.
Names that peaked alongside Millie
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Millie also like
Names whose popularity has risen and fallen in step with Millie over the last century — the same taste, a different name.
Millie in other languages
The same name as it is spelled elsewhere — not shortenings, and not different names that merely sound alike. Each one has its own record here.
Sibling names for Millie
Names from the same era that won't rhyme or share an initial with Millie — the two things that make a sibling set grate.
Common questions about Millie
What does the name Millie mean?
It depends on the parent name — Millicent gives "strong in work," Mildred "gentle strength," and Amelia "industrious."
Is Millie short for something?
It began as a short form of Millicent, Mildred, Amelia and Camilla, but is now widely given on its own.
Why do sources give Millie different meanings?
Because they are reporting different parent names, each with an unrelated root.
How popular is the name Millie?
In 2025, Millie was given to 3,353 babies in the United States, ranking #73 that year. It is one of the most popular names in the United States.
Is Millie a girl's or a boy's name?
Millie is given almost entirely to girls in birth records.
How many syllables are in Millie?
Millie has 2 syllables.
When was Millie most popular?
Millie peaked in 2025, when 3,353 babies were given the name. It has been rising over the past decade.
Is Millie a good name?
That is not something records can settle, but they can tell you what you would be choosing. Millie currently ranks #5 in the United States. It has been rising over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.