Siah is a rare name used for both girls and boys that peaked in 2021 and remains in steady use.
Siah is predominantly a boy name. In 2025 it ranked #3,931 among boys (28) and #7,092 among girls (16) — overall #6,178 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 44 | 44 | #7,092 | #3,931 |
| 2024 | 30 | 30 | #13,285 | #4,547 |
| 2023 | 33 | 33 | #11,056 | #4,444 |
| 2022 | 40 | 40 | #8,976 | #3,976 |
| 2021 | 49 | 49 | #7,585 | #3,412 |
| 2020 | 45 | 45 | #8,884 | #3,407 |
| 2019 | 39 | 39 | #11,254 | #3,704 |
| 2018 | 30 | 30 | #11,308 | #4,717 |
| 2017 | 39 | 39 | #8,238 | #4,213 |
| 2016 | 21 | 21 | #15,974 | #6,012 |
| 2015 | 38 | 38 | #7,565 | #4,527 |
| 2014 | 22 | 22 | #8,895 | #8,689 |
| 2013 | 16 | 16 | #10,896 | #11,943 |
| 2012 | 5 | 5 | — | #13,915 |
| 2011 | 15 | 15 | #14,635 | #9,472 |
| 2010 | 11 | 11 | #19,444 | #11,979 |
| 2009 | 16 | 16 | #13,519 | #9,729 |
| 2008 | 16 | 16 | #8,060 | — |
| 2007 | 8 | 8 | — | #9,640 |
| 2006 | 12 | 12 | #14,925 | #13,721 |
| 2005 | 13 | 13 | #14,299 | #11,261 |
| 2004 | 6 | 6 | #15,821 | — |
| 2003 | 6 | 6 | — | #10,678 |
| 2002 | 11 | 11 | #9,399 | — |
| 2001 | 6 | 6 | — | #10,366 |
| 2000 | 7 | 7 | #12,946 | — |
| 1999 | 8 | 8 | — | #7,765 |