Area codes in Idaho Falls, Idaho
Idaho Falls, Idaho uses 2 area codes — 208 and 986. The main Idaho Falls area code is 208.
Area codes serving Idaho Falls
Phone numbers in Idaho Falls are written as ten digits — for example (208) 555-0190 — and fall in the Mountain & Pacific Time zone.
How Idaho Falls came to have 2 area codes
The original Idaho Falls area code is 208, in service since 1947. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 986 (2017). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Idaho Falls now uses all 2 codes and every local call is dialed with ten digits.
All Idaho area codes · Is a Idaho Falls call a scam?
Nearby cities
- Twin Falls area codes
- Bozeman area codes
- Salt Lake City area codes
- Boise area codes
- Provo area codes
- Nampa area codes
- Billings area codes
- Missoula area codes
More cities in Idaho
Frequently asked questions
What is the area code for Idaho Falls?
The main area code for Idaho Falls, Idaho is 208. Idaho Falls is now served by 2 area codes in total: 208, 986.
How many area codes does Idaho Falls have?
Idaho Falls has 2 area codes: 208, 986.
Why does Idaho Falls have more than one area code?
As Idaho Falls used up the numbers available in its original area code (208, in service since 1947), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Idaho Falls number?
Dial all 10 digits — the area code (208 or 986) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.