Area codes in Twin Falls, Idaho
Twin Falls, Idaho uses 2 area codes — 208 and 986. The main Twin Falls area code is 208.
Area codes serving Twin Falls
Phone numbers in Twin Falls are written as ten digits — for example (208) 555-0190 — and fall in the Mountain & Pacific Time zone.
How Twin Falls came to have 2 area codes
The original Twin 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 Twin Falls now uses all 2 codes and every local call is dialed with ten digits.
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Frequently asked questions
What is the area code for Twin Falls?
The main area code for Twin Falls, Idaho is 208. Twin Falls is now served by 2 area codes in total: 208, 986.
How many area codes does Twin Falls have?
Twin Falls has 2 area codes: 208, 986.
Why does Twin Falls have more than one area code?
As Twin 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 Twin 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.