Cydne
Cydne was last recorded in 2006, when 7 babies were given it; 210 Americans have been recorded with it between 1948 and 2006 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Cydne by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Cydne?
Unranked in 2025
Its last girls’ rank on record is #13,919, in 2006; SSA lists a name only in years with 5 or more births.
11 babies in 1997, the peak
Cydne peaked in 1997, when 11 girls were given it, #7,880 among girls’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2006 | 7 | #13,919 | 3.7 |
| 2005 | 7 | #13,319 | 3.8 |
| 2004 | 7 | #13,070 | 3.8 |
| 2003 | 7 | #12,703 | 3.8 |
| 2001 | 7 | #12,338 | 3.9 |
| 2000 | 10 | #9,310 | 5.5 |
| 1999 | 7 | #11,642 | 3.9 |
| 1998 | 8 | #10,321 | 4.5 |
| 1997 | 11 | #7,880 | 6.3 |
| 1996 | 5 | #13,978 | 2.9 |
Every recorded year (31)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 1995 | 8 | #9,780 | 4.5 |
| 1994 | 6 | #12,118 | 3.4 |
| 1993 | 8 | #9,761 | 4.4 |
| 1992 | 5 | #13,744 | 2.7 |
| 1991 | 6 | #11,824 | 3.2 |
| 1990 | 7 | #10,454 | 3.7 |
| 1988 | 7 | #9,486 | 3.9 |
| 1986 | 7 | #8,728 | 4.1 |
| 1981 | 6 | #9,362 | 3.6 |
| 1966 | 5 | #6,768 | 3.0 |
| 1963 | 6 | #6,017 | 3.1 |
| 1961 | 5 | #6,741 | 2.5 |
| 1960 | 8 | #4,834 | 4.0 |
| 1959 | 5 | #6,444 | 2.5 |
| 1957 | 6 | #5,515 | 2.9 |
| 1956 | 7 | #4,922 | 3.5 |
| 1954 | 7 | #4,749 | 3.6 |
| 1953 | 5 | #5,825 | 2.7 |
| 1950 | 9 | #3,725 | 5.3 |
| 1949 | 5 | #5,394 | 2.9 |
| 1948 | 6 | #4,777 | 3.5 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Cydne a boy’s or a girl’s name?
Cydne has been recorded only for girls: SSA lists no boys with the name in 31 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Cydne: the SSA national file counts each sex separately.
How many people are named Cydne, and how old are they?
An estimated 192 Americans named Cydne and born in the U.S. are alive in 2026 (91% of everyone recorded); the median is 33 years old and half are between 27 and 65. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 261 people named Cydne (254 women and girls, 7 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 197 born in the U.S. The Census count is 32% above that prediction. Possible reasons: the Census records the name people give, which for many is the short form Cydne rather than the name on their birth record, and it counts people born abroad, whom SSA’s files leave out.
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 Cydne?
Cydne is a less common spelling of Sydne: SSA has recorded 210 Cydne and 876 Sydne since 1880.
Of these 8 names spelled alike, given to 9,132 babies since 1880, Cydne is the seventh most given (2.3% of them).
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.
More about Cydne and names like it
- Compare Cydne and SydneBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1990sCydne peaked in 1997.
- The top names of 1997The year the most babies were named Cydne.
- The names of Generation ZMost people named Cydne alive today were born 1997-2012.
- Names starting with CMost given first.