what area code is 515
From Wikipedia, the free encyclopedia. Area code 515 is an area code serving most of north-central Iowa. It serves Des Moines, Ames, Ankeny, Humboldt, Boone, Fort Dodge, Jefferson, Algona and Indianola.he map to the right is clickable; click on any of the area codes on the map to go to the area code for that region. The metal band Slipknot named one of their songs 515 because the band is from Des Moines.