Area code 406

406+1 406Area codeArea codes in Montana
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Bloomfield, Montana

Bloomfield is inside area code 406 and has a post office with ZIP code 59315.

Number pooling

Sufficient available codes for new exchanges in the 406 area code exist to meet anticipated demand until 2027; number pooling has been implemented in response to increased demand and inefficient use of 406 numbering resources.
By 2013, even sparsely populated Montana was using number pooling in order to extend the useful life of area code 406, the one area code in the state.


MTState of MontanaMontana, USA
Area code 406 is the telephone area code covering the entire state of Montana.