Sia is an uncommon girls' name that has climbed to its highest level yet, peaking in 2025.
Sia is predominantly a girl name. In 2025 it ranked #1,107 for girl births in the United States (and #2,110 across all names), given to 215 babies. Sia was first reported in SSA data in 1968 and peaked in 2025 (215 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 215 | 215 | #1,107 | — |
| 2024 | 183 | 183 | #1,274 | — |
| 2023 | 169 | 169 | #1,343 | — |
| 2022 | 212 | 212 | #1,149 | — |
| 2021 | 166 | 166 | #1,340 | — |
| 2020 | 174 | 174 | #1,286 | — |
| 2019 | 148 | 148 | #1,489 | — |
| 2018 | 169 | 169 | #1,337 | — |
| 2017 | 136 | 136 | #1,606 | — |
| 2016 | 127 | 127 | #1,691 | — |
| 2015 | 131 | 131 | #1,642 | — |
| 2014 | 66 | 66 | #2,681 | — |
| 2013 | 69 | 69 | #2,591 | — |
| 2012 | 58 | 58 | #2,975 | — |
| 2011 | 57 | 57 | #3,011 | — |
| 2010 | 65 | 65 | #2,750 | — |
| 2009 | 50 | 50 | #3,353 | — |
| 2008 | 54 | 54 | #3,154 | — |
| 2007 | 43 | 43 | #3,777 | — |
| 2006 | 52 | 52 | #3,219 | — |
| 2005 | 58 | 58 | #2,858 | — |
| 2004 | 49 | 49 | #3,168 | — |
| 2003 | 23 | 23 | #5,391 | — |
| 2002 | 17 | 17 | #6,655 | — |
| 2001 | 9 | 9 | #10,905 | — |
| 1999 | 12 | 12 | #8,158 | — |
| 1998 | 7 | 7 | #12,243 | — |
| 1997 | 10 | — | #8,934 | — |
| 1996 | 12 | — | #7,520 | — |
| 1995 | 5 | — | #15,421 | — |
| 1994 | 10 | — | #8,706 | — |
| 1993 | 21 | — | #4,799 | — |
| 1992 | 17 | — | #5,688 | — |
| 1991 | 20 | — | #6,210 | #9,425 |
| 1990 | 12 | — | #7,245 | — |
| 1989 | 14 | — | #6,116 | — |
| 1988 | 8 | — | #9,125 | — |
| 1986 | 9 | — | #7,675 | — |
| 1985 | 8 | — | #8,215 | — |
| 1984 | 9 | — | #7,332 | — |
| 1983 | 10 | — | #6,643 | — |
| 1982 | 22 | — | #3,750 | — |
| 1981 | 12 | — | #5,843 | — |
| 1980 | 11 | — | #6,263 | — |
| 1979 | 8 | — | #7,944 | — |
| 1978 | 7 | — | #8,425 | — |
| 1977 | 9 | — | #6,804 | — |
| 1976 | 5 | — | #10,665 | — |
| 1975 | 8 | — | #7,046 | — |
| 1974 | 7 | — | #7,555 | — |
| 1972 | 7 | — | #7,164 | — |
| 1971 | 6 | — | #8,178 | — |
| 1968 | 9 | — | #5,087 | — |