See also: treat English Proper noun Treat (plural Treats) A surname. Statistics According to the 2010 United States Census, Treat is the 7021st most common surname in the United States, belonging to 4765 individuals. Treat is most common among White (91.46%) individuals. Anagrams Ratte, atter, ratte, tater, teart, tetra, tetra-Wikiwand - on Seamless Wikipedia browsing. On steroids.