The name reached its all-time peak in 2005 with 18 births ranking #1295. FALLING Recent data shows the name is currently falling.
Tatum comes from an English surname that ultimately meant "Tata's homestead" in Old English. It is a surname-style first name with a clearly modern rise in popularity.
The name first gained public attention through actress Tatum O'Neal and later got another boost from a character in Scream. That mix of surname style and pop culture helped it become established for both girls and boys.