Area Code 385

Utah

Area code 385 serves Utah, primarily Salt Lake City, in the Mountain Time (MT) time zone. It is an overlay area code sharing territory with area code 801.

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 801 (Salt Lake City).

In service since: 29-Mar-2009

Learn more about overlay and split area codes →

Demographics & Economics

Total Population: 940,044
Population Density: 10 people/sq mi
below U.S. average (U.S.: 93 people/sq mi)
Median Household Income: $76,411
near U.S. median (U.S.: $75,144)
Poverty Rate: 10.2%
below U.S. average (U.S.: 11.5%)
Unemployment Rate: 3.6%
near U.S. average (U.S.: 3.6%)
Education Attainment: Bachelor's Degree+
31.8%
near U.S. average (U.S.: 33.7%)
High School or Lower
27.9%

Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.

See how this area code compares to all US area codes in the Statistics dashboard.

Time Zone

Mountain Time (MT)

NANPA Relief Status

According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.

Source: NANPA NPA Relief Planning Reports · See all relief planning statuses

Current Time

Mountain Time (MT)

Prefix Utilization

Geographic Coverage

State

Major Cities

Salt Lake City
West Valley City
West Jordan
Provo
Orem
Sandy
Ogden
Layton
Lehi
South Jordan
Millcreek
Taylorsville
Herriman
Draper
Murray
Eagle Mountain
Bountiful
Riverton
Saratoga Springs
Spanish Fork
Roy
Pleasant Grove
Midvale
Springville

and 74 more cities

Area Code 385 geographic coverage map (light mode)

Historical Timeline of Area Code 385

Area code 385 is an overlay serving Utah's Wasatch Front alongside its parent code 801. The story of 385 begins with the assignment of 801 to the entire state of Utah as one of the original 86 North American area codes created by AT&T in 1947. For fifty years, a single code served all of Utah until explosive growth in the 1990s demanded relief.

Key milestones:

1947: Area code 801 assigned to all of Utah as one of the original 86 NANP area codes established by AT&T. Source: Wikipedia - Original NANP Area Codes
1997: September 21 — area code 801 geographically split. Area code 435 created for rural and southern Utah, reducing 801 to the five-county Wasatch Front (Davis, Morgan, Salt Lake, Utah, and Weber counties). This made 801 one of only six "doughnut" area codes in the NANP — an enclave entirely surrounded by another code (435). Source: Wikipedia - Area codes 801 and 385
1999: Within two years of the split, rapid growth in wireless phones, pagers, and fax machines made it clear the Wasatch Front needed another area code.
April 2000: Utah Public Service Commission (Docket 99-999-05) orders a geographic split — Salt Lake County would retain 801 while surrounding Wasatch Front counties receive new code 385. NANPA issues Planning Letter PL-231. Permissive dialing planned for December 31, 2000, with exhaust projected by June 2001. Source: Utah PSC Report and Order Docket 99-999-05
2001–2007: Number conservation measures — including thousands-block number pooling and sequential assignment — postpone the 385 split for over seven years. NANPA issues a series of delay planning letters: PL-248, PL-308, PL-326, PL-337, each deferring implementation as conservation extended the life of the 801 code. Source: Deseret News (July 13, 2007)
July 12, 2007: Utah PSC (Docket 07-999-01) reverses course, rescinding the 2000 split order and selecting an all-services distributed overlay instead. The PSC declared the overlay "much less disruptive" because it allowed all residents and businesses to keep their existing numbers. Conservation measures projected to exhaust by June 2008. Source: Utah PSC Docket 07-999-01
August 16, 2007: NANPA issues final Planning Letter PL-366 for NPA 385 to overlay NPA 801, replacing all previous planning letters. Source: NANPA Planning Letters
June 1, 2008: Area code 385 enters service. Permissive 10-digit dialing begins across all five Wasatch Front counties. NANPA activates test number 385-600-1234 on December 1, 2008 for carrier routing verification.
March 1, 2009: Mandatory 10-digit dialing required for all local calls in the 801/385 overlay area. March 29, 2009: earliest date new 385 central office codes could be activated for customer assignment. Source: AT&T Customer Notification
2009–present: With the overlay active, new numbers in the Wasatch Front are predominantly assigned 385. Adobe's $1.8 billion acquisition of Utah-based Omniture in 2009 catalyzed rapid tech sector growth, further accelerating number demand within the overlay area. Source: CNBC (Dec 2024)

Regulatory History

Area code 385's creation followed an eight-year regulatory journey that began with a geographic split order and ended with Utah's first area code overlay.

Year	Event	Docket	Regulatory Action & Impact
2000	PSC orders geographic split of 801	Docket 99-999-05	Utah PSC approved splitting 801 into two geographic codes. 801 would retain Salt Lake County; new code for Utah, Davis, Weber, Morgan counties.
2001	NANPA Planning Letter issued	PL-231	NANPA notified industry of the planned split. Permissive dialing period scheduled.
2001-2007	Number pooling delays implementation	PL-248, PL-308, PL-326, PL-337	Thousands-block number pooling extended the life of 801. NANPA issued four successive planning letters postponing the split as numbering resources remained adequate.
2007	PSC reverses to overlay	Docket 07-999-01	Utah PSC reversed the 2000 split order, approving an all-services overlay instead. Industry consensus favored overlay to avoid forcing number changes on existing customers.
2007	NANPA assigns 385	PL-366	NANPA Planning Letter PL-366 (August 16, 2007) officially assigned area code 385 as overlay of 801, replacing PLs 231, 248, 308, 326, 337.
2008	385 activated	—	Area code 385 entered service June 1, 2008. Permissive 10-digit dialing began. Carriers started assigning 385 numbers to new customers.
2009	Mandatory 10-digit dialing	—	10-digit dialing became mandatory March 1, 2009 per NANPA PL-366 and AT&T customer notification. All local calls require area code.