Area Code 208
Idaho
Area code 208 serves Idaho, primarily Meridian, in the Mountain Time (MT) time zone. It has served the region since 01-Jan-1947.
Overlay Area Code
This area code is part of an overlay region, meaning the same geographic area is served by multiple area codes. Overlay codes were introduced to meet growing demand for phone numbers without requiring existing customers to change their numbers.
This area code shares its geographic region with: area code 986 (Meridian).
In service since: 01-Jan-1947
Historical Timeline of Area Code 208
Area code 208 was created in 1947 as one of the 86 original North American area codes assigned by AT&T. It remained Idaho's sole area code for 70 years until the 986 overlay was approved in 2015 and activated in 2017, making it the second statewide overlay in the North American Numbering Plan after West Virginia's 304/681 in 2009. Source: Wikipedia.
Key milestones:
- 1947: Created as one of the 86 original NANP area codes by AT&T. Idaho was assigned the 208 code. (Idaho PUC Order No. 33414)
- 2000: NANPA petitioned the Idaho PUC for area code relief (Case GNR-T-00-36).
- 2001: Idaho PUC Order No. 28902 rejected an overlay, ordered thousand-block number pooling as the primary conservation measure, and prepared a contingency three-way geographic split. The order found approximately 5.78 million unused telephone numbers in the 208 NPA. (Idaho PUC Order No. 28902)
- 2002: Thousand-block number pooling implemented in the Boise metropolitan area, the first conservation measure to extend 208's supply.
- 2007: Number pooling extended statewide, delaying the projected exhaustion of 208 to 2018.
- 2013: NANPA projected exhaustion by mid-2018 after all conservation measures were exhausted.
- 2015: Idaho PUC Order No. 33414 approved the all-services 986 overlay on November 2, 2015, with a projected lifespan of 66 years. (Idaho PUC Order No. 33414)
- 2016: Area code 986 entered service on November 5, 2016, beginning the permissive dialing period.
- 2017: Mandatory 10-digit dialing began across Idaho on August 5, 2017. The first 986 central office codes were activated on September 5, 2017.
The 15-year conservation effort from 2001 to 2015 stands as one of the longest successful deferrals of a new area code in the NANP, driven by number pooling adoption across the state.
Unique Facts About Area Code 208
Area code 208 has several notable characteristics that one of the original area codes in the North American Numbering Plan. Source: Wikipedia.
- 5.78 million unused numbers in 2001: Despite NANPA projecting exhaustion in Q3 2003, the Idaho PUC found approximately 5.78 million unused telephone numbers in the 208 NPA. This surplus enabled conservation measures that delayed a new area code by over a decade. (Idaho PUC Order No. 28902)
- Number pooling delayed exhaustion by 15 years: Thousand-block number pooling, implemented in Boise in 2002 and expanded statewide in 2007, extended the life of the 208 area code by approximately 15 years beyond the original 2003 projection.
- 66-year projected overlay lifespan: The Idaho PUC projected that the 208/986 overlay combination would last 66 years, reflecting the low population density and conservative growth projections for Idaho. (Idaho PUC Order No. 33414)
- Public preferred a split: Of 41 public comments received during the 2015 relief proceeding, 27 favored a geographic split over an overlay. The Idaho PUC chose the overlay approach to spare rural residents from having to change their phone numbers.
- Dual time zone coverage: Area code 208 spans two time zones, Mountain and Pacific, covering the entire state of Idaho from Coeur d'Alene in the Pacific time zone to Idaho Falls in the Mountain time zone.
FCC Regulatory History
Area code 208 has been the subject of two major Idaho Public Utilities Commission regulatory proceedings and one NANPA planning action. The first proceeding in 2001 established number conservation measures that extended the code's life by 15 years, while the second in 2015 approved the statewide overlay that remains in effect today. Source: Idaho PUC
| Year | Event | Docket | Regulatory Action & Impact |
|---|---|---|---|
| 2001 | NPA Relief Planning | GNR-T-00-36 | Idaho PUC Order No. 28902 rejected an overlay, ordered thousand-block number pooling as the primary conservation measure, and prepared a contingency three-way geographic split. Found 5.78 million unused numbers in the 208 NPA. (Idaho PUC Order No. 28902) |
| 2015 | 986 Overlay Approval | GNR-T-15-06 | Idaho PUC Order No. 33414 approved an all-services overlay creating area code 986 to serve Idaho alongside 208. The overlay has a projected lifespan of 66 years. Implementation required mandatory 10-digit dialing statewide. (Idaho PUC Order No. 33414) |
| 2015 | NANPA Planning Letter | PL-490 | NANPA Planning Letter PL-490 formalized the 986 overlay implementation schedule. Permissive dialing began November 5, 2016; mandatory 10-digit dialing started August 5, 2017. |
County Coverage
Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 208).
| County | Population | Share |
|---|---|---|
| Ada, ID | 555,524 | 19.8% |
| Canyon, ID | 296,381 | 10.6% |
| Kootenai, ID | 187,388 | 6.7% |
| Bonneville, ID | 165,959 | 5.9% |
| Jefferson, ID | 109,300 | 3.9% |
| Bingham, ID | 107,620 | 3.8% |
| Twin Falls, ID | 95,680 | 3.4% |
| Bannock, ID | 90,306 | 3.2% |
| Jerome, ID | 90,082 | 3.2% |
| Gem, ID | 89,413 | 3.2% |
| Payette, ID | 82,437 | 2.9% |
| Fremont, ID | 67,714 | 2.4% |
| Madison, ID | 66,014 | 2.4% |
| Bonner, ID | 59,803 | 2.1% |
| Boise, ID | 51,904 | 1.9% |
| Elmore, ID | 50,986 | 1.8% |
| Owyhee, ID | 48,056 | 1.7% |
| Gooding, ID | 47,812 | 1.7% |
| Nez Perce, ID | 46,705 | 1.7% |
| Cassia, ID | 45,619 | 1.6% |
| Minidoka, ID | 43,764 | 1.6% |
| Latah, ID | 41,664 | 1.5% |
| Blaine, ID | 40,589 | 1.4% |
| Lincoln, ID | 37,459 | 1.3% |
| Boundary, ID | 32,446 | 1.2% |
| Idaho, ID | 30,633 | 1.1% |
| Power, ID | 25,767 | 0.9% |
| Shoshone, ID | 22,321 | 0.8% |
| Washington, ID | 22,136 | 0.8% |
| Franklin, ID | 17,100 | 0.6% |
| Lewis, ID | 13,804 | 0.5% |
| Adams, ID | 13,031 | 0.5% |
| Teton, ID | 12,940 | 0.5% |
| Valley, ID | 12,630 | 0.5% |
| Benewah, ID | 11,838 | 0.4% |
| Caribou, ID | 11,381 | 0.4% |
| Clearwater, ID | 10,423 | 0.4% |
| Lemhi, ID | 10,387 | 0.4% |
| Bear Lake, ID | 10,352 | 0.4% |
| Pend Oreille, WA | 6,913 | 0.2% |
| Oneida, ID | 6,707 | 0.2% |
| Custer, ID | 5,380 | 0.2% |
| Camas, ID | 4,263 | 0.2% |
| Butte, ID | 2,964 | 0.1% |
| Box Elder, UT | 1,584 | 0.1% |
| Clark, ID | 1,426 | 0.1% |
| Lincoln, WY | 289 | 0.0% |
Call Context
This area code covers multiple cities and communities across a broad region in Idaho. It is one of the original area codes established when the North American Numbering Plan was created in 1947. The region spans Mountain and Pacific time zones.
Nearby Area Codes
Area codes geographically closest to 208.
Other Area Codes in Idaho
Area codes that also serve Idaho, linked for easy comparison.
Frequently Asked Questions
Common questions about area code 208 and how phone numbering works.
Phone numbers are assigned based on where the number was originally provisioned, not the caller's current location. Mobile phones retain their number when users move, and businesses may use numbers from regions where they don't have a physical presence. VoIP services can also provision numbers from virtually any area code.
Yes, mobile phones can have numbers from any area code in the region they were activated. Wireless carriers assign numbers from available pools regardless of phone type. When users change carriers or move to new areas, they typically keep their original number, which may have a different area code than their current location.
Start by looking up the area code on this site to understand its general geographic region. For the specific number, options include using your carrier's caller ID features or checking public directories. If you suspect fraud, you can report it to the FTC. To file a complaint about robocalls or spoofed numbers, visit the FCC Consumer Complaint Center. You can also register your number with the National Do Not Call Registry to reduce unwanted calls. Keep in mind that caller ID can display any name the caller chooses to set.
When an area's pool of available phone numbers runs low, regulators may introduce an "overlay" area code that covers the same geographic territory as the original. Both codes coexist, and new numbers are assigned from whichever code has availability. This area code shares its region with area code 986. Learn more in our overlay vs split guide.
While Riverside is a prominent city in this area code's coverage, the code serves the broader surrounding region as well. Area codes are assigned geographically and typically cover multiple cities, towns, and communities beyond any single anchor city.
Yes, this is one of the original area codes established in 1947 when the North American Numbering Plan (NANP) was created. The initial set of area codes was designed to cover all of North America with a unified dialing system, and many of these original codes remain in use today, though some have been split or received overlays.