What is what area code is 859?

The 859 area code is a telephone area code in the North American Numbering Plan (NANP) for the state of Kentucky. It covers the eastern and northern portions of the state, including cities such as Lexington, Covington, Richmond, and Florence. The 859 area code was created in 1999 as an overlay of the original 606 area code to accommodate the growing population and demand for telephone numbers in the region.