Siera is an uncommon variant of Sierra that peaked in 1998 and has since faded.
Siera is a girl name. In 2025 it ranked #12,990 for girl births in the United States (and #21,708 across all names), given to 7 babies. Siera was first reported in SSA data in 1983 and peaked in 1998 (150 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 7 | 7 | #12,990 |
| 2024 | 8 | 8 | #12,010 |
| 2022 | 8 | 8 | #12,096 |
| 2020 | 6 | 6 | #14,863 |
| 2018 | 8 | 8 | #12,334 |
| 2017 | 10 | 10 | #10,595 |
| 2016 | 8 | 8 | #12,734 |
| 2014 | 17 | 17 | #7,259 |
| 2013 | 16 | 16 | #7,701 |
| 2012 | 16 | 16 | #7,754 |
| 2011 | 20 | 20 | #6,529 |
| 2010 | 28 | 28 | #5,088 |
| 2009 | 22 | 22 | #6,285 |
| 2008 | 53 | 53 | #3,215 |
| 2007 | 48 | 48 | #3,474 |
| 2006 | 81 | 81 | #2,346 |
| 2005 | 77 | 77 | #2,339 |
| 2004 | 87 | 87 | #2,098 |
| 2003 | 86 | 86 | #2,083 |
| 2002 | 110 | 110 | #1,681 |
| 2001 | 114 | 114 | #1,618 |
| 2000 | 121 | 121 | #1,515 |
| 1999 | 116 | 116 | #1,490 |
| 1998 | 150 | 150 | #1,225 |
| 1997 | 132 | — | #1,318 |
| 1996 | 149 | — | #1,207 |
| 1995 | 114 | — | #1,431 |
| 1994 | 137 | — | #1,257 |
| 1993 | 130 | — | #1,307 |
| 1992 | 99 | — | #1,572 |
| 1991 | 125 | — | #1,327 |
| 1990 | 94 | — | #1,603 |
| 1989 | 75 | — | #1,802 |
| 1988 | 67 | — | #1,860 |
| 1987 | 70 | — | #1,730 |
| 1986 | 76 | — | #1,585 |
| 1985 | 46 | — | #2,250 |
| 1984 | 7 | — | #9,005 |
| 1983 | 5 | — | #11,802 |