317 Area Code: Indianapolis, Indiana

Indianapolis is the primary city of the 317 area code, the long-running designation for central Indiana. The city sits at roughly the geographic center of the state, on a flat plain divided by the White River and ringed by interstate highways that earned it a long-standing nickname as the Crossroads of America. Indianapolis's working economy reflects a substantial concentration of insurance, pharmaceuticals (Eli Lilly's headquarters has been a fixture for over a century), motorsports, and state government, and the broader 317 footprint covers the city along with Carmel, Fishers, Greenwood, and the surrounding suburban ring.

Records linked to 317 numbers in the directory often include other Indiana cities — Evansville, Fort Wayne, Hammond, and Lafayette among them. None of those are inside the 317 footprint. The pattern reflects standard public-record dynamics, with phone numbers porting across Indiana and addresses linked across multiple cities. The directory currently documents 693 distinct prefixes within 317 in detail, a working subset of the prefix population the code carries.

Indianapolis's home values come in below the US median, an unusual reading for a state capital but typical of Indiana housing costs. Median household income runs below the national figure, the city's median age sits a few years under the US reading, and population places Indianapolis among the larger cities in the Midwest — substantial enough to anchor a metropolitan area that pulls steadily on populations from across central Indiana and the surrounding states.