Sidnee
Sidnee was last recorded in 2019, when 9 babies were given it; 636 Americans have been recorded with it between 1940 and 2019 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Sidnee by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Sidnee mean?
Wiktionary, English section
Sidnee is “a female given name transferred from the surname.”
A very rare spelling variant of Sidney.
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Sidnee?
Unranked in 2025
Its last girls’ rank on record is #11,250, in 2019; SSA lists a name only in years with 5 or more births.
39 babies in 1999, the peak
Sidnee peaked in 1999, when 39 girls were given it, #3,301 among girls’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2019 | 9 | #11,250 | 5.4 |
| 2016 | 7 | #14,143 | 4.0 |
| 2015 | 8 | #12,849 | 4.5 |
| 2014 | 7 | #14,348 | 3.9 |
| 2013 | 7 | #14,389 | 4.0 |
| 2012 | 11 | #10,334 | 6.2 |
| 2011 | 13 | #9,067 | 7.4 |
| 2010 | 19 | #6,866 | 10.7 |
| 2009 | 20 | #6,777 | 10.9 |
| 2008 | 24 | #5,931 | 12.7 |
Every recorded year (33)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2007 | 22 | #6,293 | 11.4 |
| 2006 | 24 | #5,684 | 12.6 |
| 2005 | 37 | #3,932 | 20.0 |
| 2004 | 32 | #4,370 | 17.4 |
| 2003 | 21 | #5,765 | 11.5 |
| 2002 | 32 | #4,056 | 17.8 |
| 2001 | 38 | #3,535 | 21.1 |
| 2000 | 34 | #3,795 | 18.7 |
| 1999 | 39 | #3,301 | 22.0 |
| 1998 | 36 | #3,416 | 20.4 |
| 1997 | 31 | #3,697 | 17.8 |
| 1996 | 28 | #3,919 | 16.0 |
| 1995 | 35 | #3,274 | 19.9 |
| 1994 | 18 | #5,415 | 10.1 |
| 1993 | 13 | #6,988 | 7.2 |
| 1992 | 13 | #7,006 | 7.1 |
| 1991 | 14 | #6,542 | 7.5 |
| 1990 | 7 | #11,229 | 3.7 |
| 1989 | 13 | #6,478 | 7.1 |
| 1988 | 7 | #10,239 | 3.9 |
| 1952 | 6 | #5,483 | 3.2 |
| 1941 | 5 | #4,996 | 4.1 |
| 1940 | 6 | #4,285 | 5.2 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Sidnee a boy’s or a girl’s name?
Sidnee has been recorded only for girls: SSA lists no boys with the name in 33 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Sidnee: the SSA national file counts each sex separately.
How many people are named Sidnee, and how old are they?
An estimated 620 Americans named Sidnee and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 25 years old and half are between 20 and 29. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 646 people named Sidnee (631 women and girls, 15 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 624 born in the U.S. The Census count is 4% above that prediction.
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).
Names spelled alike
Of these 8 names spelled alike, given to 203,837 babies since 1880, Sidnee is the fifth most given (<1% of them). In 2025 none of their 916 babies recorded by SSA was a Sidnee (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 Sidnee
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 Sidnee and names like it
- Compare Sidnee and SydneyBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1990sSidnee peaked in 1999.
- California’s most given namesThe state where SSA recorded the most babies named Sidnee since 1910.
- From surnamesWiktionary’s origin for Sidnee: every such name, by how often it is given.
- The top names of 1999The year the most babies were named Sidnee.
- The names of Generation ZMost people named Sidnee alive today were born 1997-2012.
- Names starting with SMost given first.