Area code 406 — Montana
Area code 406 is in Montana. Time zone, overlays, counties and ZIP codes.
| Location | Montana (all) |
|---|---|
| State | Montana |
| Status | In service · since 1947 |
| Time zone | Mountain · |
| Local dialing | 10 digits |
Counties (approximate)
Beaverhead CountyBig Horn CountyBlaine CountyBroadwaterBroadwater CountyCarbon CountyCarter CountyCascadeCascade CountyChouteau CountyCuster CountyDaniels CountyDawson CountyDeer Lodge CountyFallon CountyFergus CountyFlatheadFlathead CountyGallatinGallatin CountyGarfield CountyGlacier CountyGolden Valley CountyGranite CountyHill CountyJefferson CountyJudith Basin CountyLake CountyLewis and ClarkLewis and Clark County
ZIP codes in area code 406
Approximate: area code boundaries follow telephone rate centers, not ZIP codes.
59001 Absarokee59002 Acton59003 Ashland59004 Ashland59006 Ballantine59007 Bearcreek59008 Belfry59010 Bighorn59011 Big Timber59012 Birney59013 Boyd59014 Bridger59015 Broadview59016 Busby59018 Clyde Park59019 Columbus59020 Cooke City59022 Crow Agency59024 Custer59025 Decker59026 Edgar59027 Emigrant59028 Fishtail59029 Fromberg59030 Gardiner59031 Garryowen59032 Grass Range59033 Greycliff59034 Hardin59035 Fort Smith59036 Harlowton59037 Huntley59038 Hysham59039 Ingomar59041 Joliet59043 Lame Deer59044 Laurel59046 Lavina59047 Livingston59050 Lodge Grass
Format a 406 number
US numbers are written as (406) 555-0123 or 406-555-0123. From outside the US, dial +1 406 555 0123.
Is a call from 406 a scam?
An area code only tells you where a number was assigned. Caller ID can be faked (“spoofed”), so do not trust a call just because the area code looks local. Never share codes or payment details with unexpected callers.
Sources: NANPA via NumberResearch.org (CC BY 4.0); place names and history from Wikipedia (CC BY-SA 4.0). See data sources.