Located in the Central (GMT -06:00) time zone. Area code 601 serves the state of Mississippi. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 601 is a General Purpose Code. 601 service area does overlap with 769 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.