Kayci
- Gender
- Girl
- Say it
- KAY-see
- Origin
- Irish
- US rank, 2025
- #6,545 for girls
Kayci is a girls' name of Irish origin, meaning “vigilant”. In 2025 it ranked 6,545th for girls in the US (17 babies).
What does Kayci mean?
Irish: spelling of Kaycee, itself a spelling of Casey, or from the initials K.C.
“vigilant”
A spelling of Casey, from the Irish surname Ó Cathasaigh, based on cathasach, 'vigilant'.
Meaning borrowed from Kaycee. More on Wiktionary.
Is Kayci a girl's or a boy's name?
Kayci is a girls' name. In 2025, it was given to 17 girls in the US. Too few boys were given it to be listed.
How popular is Kayci in the UK?
No girls in the UK were given it in 2025, or too few to be listed. Its busiest year was 2010, with 15 girls.
Half of all the girls named Kayci in the UK since 1996 were born between 2005 and 2011, the years shaded on the chart below.
Kayci in the UK, year by year
| Year | Girls | Rank |
|---|---|---|
| 2018 | 2 | #7,433 |
| 2017 | 4 | #4,967 |
| 2016 | 0 | – |
| 2015 | 3 | #5,983 |
| 2014 | 2 | #7,494 |
| 2013 | 9 | #2,796 |
| 2012 | 10 | #2,666 |
| 2011 | 10 | #2,582 |
| 2010 | 15 | #1,912 |
| 2009 | 13 | #2,037 |
| 2008 | 5 | #4,065 |
| 2007 | 8 | #2,790 |
| 2006 | 8 | #2,657 |
| 2005 | 9 | #2,360 |
| 2004 | 0 | – |
| 2003 | 7 | #2,574 |
| 2002 | 8 | #2,231 |
| 2001 | 8 | #2,150 |
| 2000 | 1 | #5,280 |
How popular is Kayci in the US?
- Rank in 2025
- 6,545th among girls
- Babies in 2025
- 17 about 1 in 95,000 girls
- Five-year trend
- Steady down 4% in five years
- Same name in a class
- under 1% chance among 15 girls
In 2025, 17 girls in the US were named Kayci, making it the 6,545th most popular name for girls. Five years earlier, in 2020, it was 5,001st. Its busiest year was 1990, with 77 girls. It first appears in the records in 1974.
It has been given to fewer girls each year for the last 3 years. 2025 had fewer girls named Kayci than any year since 1980.
Half of all the girls named Kayci in the US since 1880 were born between 1990 and 2011, the years shaded on the chart below.
In 2025, 1,196 girls in the US were given Kayci or a name that sounds the same. With every name's spellings counted this way, that ranks #284, up from #6,545 for this spelling alone.
In 2023, 84% of the babies named Kayci in the US were girls.
Kayci in the US, year by year
| Year | Girls | Rank |
|---|---|---|
| 2025 | 17 | #6,545 |
| 2024 | 26 | #5,018 |
| 2023 | 27 | #4,870 |
| 2022 | 33 | #4,293 |
| 2021 | 31 | #4,409 |
| 2020 | 25 | #5,001 |
| 2019 | 25 | #5,161 |
| 2018 | 23 | #5,450 |
| 2017 | 37 | #3,995 |
| 2016 | 33 | #4,344 |
| 2015 | 30 | #4,583 |
| 2014 | 29 | #4,766 |
| 2013 | 23 | #5,642 |
| 2012 | 32 | #4,484 |
| 2011 | 29 | #4,806 |
| 2010 | 41 | #3,744 |
| 2009 | 34 | #4,369 |
| 2008 | 31 | #4,760 |
| 2007 | 43 | #3,720 |
| 2006 | 39 | #3,853 |
| 2005 | 31 | #4,369 |
| 2004 | 32 | #4,283 |
| 2003 | 32 | #4,105 |
| 2002 | 41 | #3,330 |
| 2001 | 39 | #3,413 |
| 2000 | 40 | #3,329 |
| 1999 | 51 | #2,700 |
| 1998 | 51 | #2,648 |
| 1997 | 40 | #2,974 |
| 1996 | 34 | #3,356 |
| 1995 | 39 | #2,972 |
| 1994 | 35 | #3,229 |
| 1993 | 40 | #2,933 |
| 1992 | 54 | #2,381 |
| 1991 | 50 | #2,478 |
| 1990 | 77 | #1,843 |
| 1989 | 61 | #2,049 |
| 1988 | 43 | #2,484 |
| 1987 | 35 | #2,778 |
| 1986 | 36 | #2,681 |
| 1985 | 22 | #3,729 |
| 1984 | 21 | #3,725 |
| 1983 | 34 | #2,594 |
| 1982 | 22 | #3,646 |
| 1981 | 23 | #3,532 |
| 1980 | 17 | #4,326 |
| 1979 | 9 | #6,694 |
| 1978 | 12 | #5,214 |
| 1977 | 11 | #5,530 |
| 1976 | 0 | – |
| 1975 | 7 | #7,171 |
| 1974 | 6 | #7,678 |
Nicknames for Kayci
- Kay 3 girls in the UK in 2025
Names like Kayci
Names given in the same years and the same naming tradition, with a similar sound.
Keira, Caoimhe, Kiara, Cassidy, Eden, Teagan, Aoibheann, Aoife, Niamh, Raegan, Brianna, Caragh
Other spellings of Kayci
Casey, Kacey, Kaycee, Kacie, Kasey, Kaci, Kayce, Keisy, Kaycie, Keysi, Kaysi
Names related to Kayci
More Irish names
Oscar, Rowan, Rory, Maeve, Finn, Aiden, Ryan, Nolan, Quinn, Orla, Cody, Erin, Ronan, Connor, Declan, Kennedy
Sources
Figures from Baby names in England and Wales (Office for National Statistics), Babies' first names (National Records of Scotland), Baby names (Northern Ireland Statistics and Research Agency) and Popular Baby Names (US Social Security Administration). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.
To cite this page: Nameling, “Kayci: name meaning, origin and popularity”, https://www.nameling.co.uk/names/kayci, updated 20 October 2026.