Meaning and Name Origin
Kayci \ka(y)-ci\ as a name for girls. The name Kayci means "alert, watchful". Kayci is a derivative of Casey (Irish, Gaelic): from the male Gaelic name Cathasaigh. Kayci is also a derivative of Kacie (American).
Kayci has 42 variants: Cacey, Caci, Cacy, Caisee, Caisey, Caisi, Caisie, Cascy, Casee, Casi, Casie, Cassee, Cassey, Cassye, Casy, Caycee, Caycey, Cayci, Caysee, Caysey, Caysi, Caysie, Kacee, Kacey▼, Kaci▼, Kacy, Kacye, Kacyee, Kaissie, Kasci, Kasee, Kasey▼, Kasi, Kasie, Kaycee, Kaycey, Kaysee, Kaysey, Kaysi, Kaysie, Kaysy and Kaysyee.
Kayci is an uncommon first name for women. Kayci is a rare surname too for both adults and children. (2000 U.S. Census)
Displayed below is a comparison of the usage of Kayci and related names. Prominent alternative forms of Kayci (#unlisted) are Casey (#792 the previous year), Casie, Kacey, Kaci, Kacie, Kacy, Kasey, Kasie and Kaycee. These girl names were at the top of their popularity in the year 1991 and have become much less popular since, with the forms Casey, Kacey, Kaci, Kacie and Kasey becoming somewhat outmoded. (Top 1000 Birth Names Statistics, 2014)