Milli
Girl name · #4331 in 2025 · Very rare
How old is the name Milli? In official American birth records, Milli has been tracked continuously since 2002, giving it 23 years of documented American history.
Milli is currently the #4331 girl name in the United States — 33 babies received it in 2025. A decade ago it stood at #9481, so the name has been rising over the past ten years. Roughly one in every 54,545 girls born in 2025 was named Milli.
Babies named Milli per year. Source: Official national birth records.
The 23-year story
Milli first appears in the Social Security records in 2002, when 5 girls received the name. Its all-time peak is essentially right now: 2022, with 39 babies and a rank of #3827. 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.
Unlock the 5-year forecast and compare Milli against up to 5 other names.
Uniqueness: will there be another Milli in class?
On our rarity read — which blends how common Milli is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Milli will likely be the only one in the room, with the occasional spelling-out as the price.
Where Milli is most common
State-level data for Milli is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Names like Milli
Statistically, parents drawn to Milli tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Nelli, Nyeli, Metzli, Madi, and Mayeli.
NelliNyeliMetzliMadiMayeliMayliMetztliMarlei
Rank history (last 25 years)
| Year | Babies named Milli | Rank |
|---|---|---|
| 2025 | 33 | #4265 |
| 2024 | 24 | #5300 |
| 2023 | 33 | #4276 |
| 2022 | 39 | #3827 |
| 2021 | 25 | #5091 |
| 2020 | 33 | #4169 |
| 2019 | 31 | #4437 |
| 2018 | 28 | #4768 |
| 2017 | 18 | #6531 |
| 2016 | 19 | #6401 |
| 2015 | 11 | #9481 |
| 2014 | 25 | #5310 |
| 2013 | 23 | #5644 |
| 2012 | 21 | #6110 |
| 2011 | 16 | #7436 |
| 2010 | 16 | #7513 |
| 2009 | 25 | #5537 |
| 2008 | 12 | #9476 |
| 2007 | 5 | #17636 |
| 2006 | 5 | #17168 |
| 2005 | 7 | #13010 |
| 2002 | 5 | #15432 |
Frequently asked questions
How old is the name Milli?
In official American birth records, the name Milli first appeared in 2002 (over 23 years ago), when 5 newborn girls received the name. It has been tracked in modern national records for 23 years.
Is Milli a popular girl name?
Milli ranked #4331 among girls in 2025 with 33 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #9481.
When was the name Milli most popular?
Milli peaked in 2022, when 39 American girls received the name (ranked #3827 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Milli?
In 2025, roughly 1 in 54,545 newborn American girls was named Milli. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.