Milley is a very rare variant of Millie that peaked in 2008 and has since faded.
Milley is a girl name. In 2025 it ranked #16,494 for girl births in the United States (and #27,300 across all names), given to 5 babies. Milley first appears in 2007 and peaked in 2008 (15 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 5 | 5 | #16,494 |
| 2022 | 7 | 7 | #13,150 |
| 2018 | 5 | 5 | #17,370 |
| 2017 | 6 | 6 | #15,346 |
| 2016 | 6 | 6 | #15,627 |
| 2013 | 6 | 6 | #15,928 |
| 2011 | 6 | 6 | #16,146 |
| 2010 | 10 | 10 | #10,991 |
| 2009 | 8 | 8 | #13,299 |
| 2008 | 15 | 15 | #8,410 |
| 2007 | 8 | 8 | #13,509 |