What does Kayleb mean?
Kayleb /kay-leb/ [2 sylls.] as a boys' name. Kayleb's name origin is Hebrew, and the name Kayleb means "faith, devotion, whole hearted". Kayleb is an alternate spelling of Caleb (Hebrew): anglicized transcription of Kaleb. Compare last name Kalb.
How popular is Kayleb?
Kayleb is a rare first name for males. Kayleb is also a unique surname for both adults and children. (2000 U.S. Census)
Below is a graphed comparison of the usage of Kayleb and affiliated names. Prominent alternative forms of Kayleb (not ranked) are Cal, Cale, Caleb (#35 last year) and Kaleb (#147). Variants like Cayleb are seldom used. These boy names were at the top of their popularity in 2008 (usage of 0.5568%) and are now much less popular (usage 0.4545%, ▼18.4%), with the forms Cal and Cale becoming less stylish. Caleb (#35) and Kaleb (#147) are two of the more chic names for newborns in this list, with Caleb going through a rebound in usage. (Top 1000 Birth Names Statistics, 2014)