208 area code — Boise, ID geographic

Data: NANPA public reports, current as of July 28, 2026.

208 is the area code for Boise, Idaho, in service since January 1, 1947, Mountain and Pacific time. The same territory is also served by its overlay code (208/986 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.

The code currently holds 785 working prefixes, held by 65 different carriers. Of these, 519 are pooled prefixes shared by multiple carriers. Numbers are anchored to 145 rate centers — billing localities that fix where each prefix belongs.

To check where a specific 208 number was issued, look up its six-digit prefix; to check who is actually calling, ignore the display and verify through an official callback number — caller ID is assertable and routinely spoofed.

Among Idaho codes, 208 stands out as the oldest area code in Idaho, in service since 1947, and one of the few NANP area codes whose territory spans two time zones.

Local calls inside 208 are dialed 10D.

This is one of the few NANP codes whose territory crosses a time-zone boundary (Mountain and Pacific), so identical codes can sit an hour apart.

The current NANPA exhaust forecast for the 208/986 complex is 1Q 2060.

As demand grew it in turn gave rise to 986 (2017).

Largest localities in 208

FAQ

Will 208 run out of numbers?

NANPA's current forecast projects exhaust in 1Q 2060 — decades of capacity remain.

Why am I getting spam calls from 208 numbers?

Scammers spoof recognizable area codes so calls look local or familiar. A displayed 208 number does not prove the call originated there — see our guide to spotting spoofed calls.

Where is a 208 number from?

208 is assigned to Boise and surrounding areas of Idaho in the Mountain and Pacific time zone. The three digits after the area code (the prefix) narrow it down to a rate center.