Millie
Meaning: Gentle strength, industrious
Origin: English (diminutive)
Gender: Girl
Rank in Australia: #279
Total births: 1,021
History: Millie surged in the 2010s as a sweet, vintage name in Australia. Millie the kangaroo mascot of the 2000 Sydney Olympics is fondly remembered. Millie means Sydney 2000 magic.
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Look at the data
Every number here comes directly from Australia’s birth records. No estimates, no averages — just the counts.
| Current rank (2025) | #40 |
| Babies named Millie in 2025 | 155 |
| Total recorded in Australia | 1,021 |
| Peak year | 2023 (169 babies) |
| Highest rank ever | #31 |
| Years in records | 2017–2025 (8 years of data) |
| Change over last 5 years | ↑ 27 spots |
Frequently asked about Millie
What does the name Millie mean?
Millie means “Gentle strength, industrious” from English (diminutive) roots.
What is the origin of the name Millie?
Millie has English (diminutive) origin. The traditional meaning is “Gentle strength, industrious”.
How popular is Millie in Australia?
Millie ranked #40 in Australia in 2025 — given to 155 babies that year.
When was Millie most popular?
Millie peaked in 2023 with 169 babies registered that year in Australia.
Is Millie a boy or girl name?
Millie is predominantly a girls' name in Australia — over 90% of Millies in registered births are female.
Is the name Millie rising or falling in popularity?
Millie has risen 27 spots in the rankings over the last 5 years in Australia — from #67 in 2020 to #40 in 2025.
How long has Millie been recorded in Australia?
Millie appears in birth records in Australia across 8 years — from 2017 through 2025.