Keissy is of Spanish origin, derived from the female given name "Keisha," which is a variant spelling of "Keesha." This name is believed to have been influenced by the African-American naming trend popularized in the United States during the mid-20th century. The name Keissy has gained popularity beyond its roots and can now be found among speakers of Spanish worldwide. It typically follows Spanish naming customs, with the first name preceding the last name, and is often accompanied by a middle name.
"Keissy has seen a fluctuating number of births over the years, with peaks in 2015 and 2018, and a notable increase in recent years with 8 births recorded in 2023. Altogether, there have been 27 babies named Keissy born since 2015."