Area codes in Hammond, Indiana
Hammond, Indiana uses area code 219. The main Hammond area code is 219.
Area codes serving Hammond
All Indiana area codes · Is a Hammond call a scam?
Nearby cities
- Gary area codes
- Chicago area codes
- Valparaiso area codes
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- Naperville area codes
- Schaumburg area codes
- South Bend area codes
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.