Cassidi
Cassidi was last recorded in 2020, when 12 babies were given it; 863 Americans have been recorded with it between 1977 and 2020 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Cassidi by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Cassidi?
Unranked in 2025
Its last girls’ rank on record is #8,497, in 2020; SSA lists a name only in years with 5 or more births.
51 babies in 1999, the peak
Cassidi peaked in 1999, when 51 girls were given it, #2,702 among girls’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2020 | 12 | #8,497 | 7.4 |
| 2019 | 10 | #9,873 | 6.0 |
| 2018 | 20 | #6,063 | 11.8 |
| 2017 | 15 | #7,529 | 8.7 |
| 2016 | 11 | #9,535 | 6.2 |
| 2015 | 7 | #13,285 | 3.9 |
| 2014 | 15 | #7,736 | 8.4 |
| 2013 | 15 | #7,833 | 8.5 |
| 2012 | 10 | #10,592 | 5.7 |
| 2011 | 16 | #7,504 | 9.1 |
Every recorded year (42)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2010 | 16 | #7,598 | 9.0 |
| 2009 | 23 | #5,927 | 12.5 |
| 2008 | 20 | #6,605 | 10.6 |
| 2007 | 10 | #10,982 | 5.2 |
| 2006 | 26 | #5,263 | 13.7 |
| 2005 | 22 | #5,627 | 11.9 |
| 2004 | 22 | #5,603 | 12.0 |
| 2003 | 24 | #5,111 | 13.1 |
| 2002 | 45 | #3,153 | 25.0 |
| 2001 | 33 | #3,872 | 18.3 |
| 2000 | 48 | #2,951 | 26.4 |
| 1999 | 51 | #2,702 | 28.8 |
| 1998 | 33 | #3,583 | 18.7 |
| 1997 | 40 | #2,981 | 23.0 |
| 1996 | 37 | #3,155 | 21.1 |
| 1995 | 32 | #3,425 | 18.2 |
| 1994 | 35 | #3,237 | 19.6 |
| 1993 | 19 | #5,024 | 10.5 |
| 1992 | 13 | #6,701 | 7.1 |
| 1991 | 25 | #4,073 | 13.3 |
| 1990 | 15 | #5,864 | 7.9 |
| 1989 | 10 | #7,525 | 5.4 |
| 1988 | 25 | #3,711 | 14.0 |
| 1987 | 15 | #5,101 | 8.6 |
| 1986 | 16 | #4,753 | 9.3 |
| 1985 | 21 | #3,870 | 12.2 |
| 1984 | 9 | #6,885 | 5.3 |
| 1983 | 14 | #4,915 | 8.4 |
| 1982 | 8 | #7,572 | 4.7 |
| 1981 | 11 | #5,934 | 6.6 |
| 1979 | 8 | #7,404 | 5.0 |
| 1977 | 6 | #8,587 | 3.9 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Cassidi a boy’s or a girl’s name?
Cassidi has been recorded only for girls: SSA lists no boys with the name in 42 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Cassidi: the SSA national file counts each sex separately.
How many people are named Cassidi, and how old are they?
An estimated 849 Americans named Cassidi and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 27 years old and half are between 20 and 32. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 746 people named Cassidi (737 women and girls, 9 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 843 born in the U.S. The Census count is 12% below that prediction. Possible reasons: people who give a short form or another name to the Census, and a survival estimate that can run high.
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 Cassidi?
Cassidi is a less common spelling of Cassidy: SSA has recorded 863 Cassidi and 64,583 Cassidy since 1880.
Of these 8 names spelled alike, given to 91,168 babies since 1880, Cassidi is the fifth most given (<1% of them). In 2025 none of their 882 babies recorded by SSA was a Cassidi (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 Cassidi
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 Cassidi and names like it
- Compare Cassidi and CassidyBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1990sCassidi peaked in 1999.
- Texas’s most given namesThe state where SSA recorded the most babies named Cassidi since 1910.
- The top names of 1999The year the most babies were named Cassidi.
- The names of Generation ZMost people named Cassidi alive today were born 1997-2012.
- Names starting with CMost given first.