Sidnie
Sidnie was last recorded in 2017, when 5 babies were given it; 312 Americans have been recorded with it between 1990 and 2017 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Sidnie by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Sidnie?
Unranked in 2025
Its last girls’ rank on record is #18,089, in 2017; SSA lists a name only in years with 5 or more births.
27 babies in 2001, the peak
Sidnie peaked in 2001, when 27 girls were given it, #4,544 among girls’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2017 | 5 | #18,089 | 2.9 |
| 2012 | 5 | #19,161 | 2.8 |
| 2011 | 5 | #19,167 | 2.8 |
| 2010 | 8 | #13,296 | 4.5 |
| 2009 | 7 | #15,014 | 3.8 |
| 2008 | 16 | #8,058 | 8.5 |
| 2007 | 6 | #17,310 | 3.1 |
| 2006 | 12 | #9,824 | 6.3 |
| 2005 | 13 | #8,800 | 7.0 |
| 2004 | 14 | #8,179 | 7.6 |
Every recorded year (24)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2003 | 12 | #8,976 | 6.6 |
| 2002 | 22 | #5,417 | 12.2 |
| 2001 | 27 | #4,544 | 15.0 |
| 2000 | 16 | #6,757 | 8.8 |
| 1999 | 16 | #6,443 | 9.0 |
| 1998 | 15 | #6,666 | 8.5 |
| 1997 | 22 | #4,795 | 12.6 |
| 1996 | 16 | #6,017 | 9.1 |
| 1995 | 20 | #4,994 | 11.4 |
| 1994 | 17 | #5,671 | 9.5 |
| 1993 | 8 | #10,446 | 4.4 |
| 1992 | 8 | #10,339 | 4.3 |
| 1991 | 13 | #6,925 | 6.9 |
| 1990 | 9 | #9,141 | 4.7 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Sidnie a boy’s or a girl’s name?
Sidnie has been recorded only for girls: SSA lists no boys with the name in 24 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Sidnie: the SSA national file counts each sex separately.
How many people are named Sidnie, and how old are they?
An estimated 308 Americans named Sidnie and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 26 years old and half are between 22 and 30. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 353 people named Sidnie (346 women and girls, 7 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 309 born in the U.S. The Census count is 14% above that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
How common is the spelling Sidnie?
Sidnie is a less common spelling of Sydney: SSA has recorded 312 Sidnie and 187,700 Sydney since 1880.
Of these 8 names spelled alike, given to 208,725 babies since 1880, Sidnie is the eighth most given (<1% of them). In 2025 none of their 924 babies recorded by SSA was a Sidnie (SSA lists a name only with 5 or more babies of one sex).
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Sidnie
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Sidnie and names like it
- Compare Sidnie and SydneyBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sSidnie peaked in 2001.
- California’s most given namesThe state where SSA recorded the most babies named Sidnie since 1910.
- The top names of 2001The year the most babies were named Sidnie.
- The names of Generation ZMost people named Sidnie alive today were born 1997-2012.
- Names starting with SMost given first.