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Area Codes in CALUMET Info
| Area Code: | CALUMET |
| States: | Michigan, Oklahoma |
| Cities: | Calumet |
Exchanges in Area Code CALUMET
| Exchange | State | County | City |
| 906-303 | Michigan | Houghton | Calumet |
| 906-337 | Michigan | Houghton | Calumet |
| 906-369 | Michigan | Houghton | Calumet |
| 405-893 | Oklahoma | Canadian | Calumet |
| 906-934 | Michigan | Houghton | Calumet |