Mio is a rare variant of Mia that peaked in 2020 and remains in steady use.
Mio is predominantly a girl name. In 2025 it ranked #7,383 among girls (15) and #10,339 among boys (7) — overall #9,843 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 22 | 22 | #7,383 | #10,339 |
| 2024 | 22 | 22 | #6,850 | #13,578 |
| 2023 | 20 | 20 | #8,352 | #10,431 |
| 2022 | 24 | 24 | #10,174 | #6,369 |
| 2021 | 24 | 24 | #7,899 | #7,962 |
| 2020 | 27 | 27 | #5,788 | #11,534 |
| 2019 | 21 | 21 | #9,543 | #8,014 |
| 2018 | 22 | 22 | #8,465 | #8,609 |
| 2017 | 24 | 24 | #7,721 | #8,610 |
| 2016 | 23 | 23 | #7,871 | #9,411 |
| 2015 | 22 | 22 | #7,878 | #10,259 |
| 2014 | 14 | 14 | #8,363 | — |
| 2013 | 20 | 20 | #8,906 | #10,365 |
| 2012 | 14 | 14 | #8,501 | — |
| 2011 | 14 | 14 | #8,490 | — |
| 2010 | 24 | 24 | #6,817 | #13,613 |
| 2009 | 21 | 21 | #8,751 | #10,620 |
| 2008 | 10 | 10 | #11,339 | — |
| 2007 | 19 | 19 | #8,862 | #13,744 |
| 2006 | 9 | 9 | #12,105 | — |
| 2005 | 8 | 8 | #12,642 | — |
| 2004 | 7 | 7 | #13,739 | — |
| 2003 | 12 | 12 | #8,889 | — |
| 2001 | 7 | 7 | #13,008 | — |
| 2000 | 6 | 6 | #14,418 | — |
| 1999 | 5 | 5 | #16,056 | — |
| 1997 | 6 | — | #13,191 | — |
| 1996 | 7 | — | #11,387 | — |
| 1990 | 5 | — | #14,446 | — |
| 1988 | 5 | — | #13,154 | — |