The 601 Area Code (or Area Code 601) is located in the state of MS. Area Code 601 is one of the 269 3-digit telephone area codes in the USA.It covers roughly 40 unique phone numbers and 94 individuals near the city of Jackson.opulation Demographics. The 601 Area Code is one of the telephone area codes supported by Spokeo's Reverse Phone Lookup technology. Spokeo's reverse phone lookup functions much like a personal caller-ID system, and can identify the owner of virtually any phone number in the continental United States.