Area Code 715

Wisconsin

Area code 715 serves Wisconsin, primarily Eau Claire, in the Central Time (CT) 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 534 (Eau Claire).

In service since: 01-Jan-1947

Learn more about overlay and split area codes →

Demographics & Economics

Demographic Data Unavailable for Area Code 715

County-level demographic data is not available for this area code because NPA boundary polygons are not publicly distributed by NANPA. We use geographic boundary data from the Colorado Open Data Portal to map area codes to counties, which currently covers 194 of 376 geographic area codes.

Demographic statistics (population, income, education, poverty) require county-level aggregations from Census ACS data. Without a county mapping, these aggregations cannot be computed. We are actively seeking additional data sources to improve coverage.

Statistics are population-weighted aggregations from Census ACS 5-year estimates where county boundary data is available.See Sources for details.

Time Zone

Central Time (CT)

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

Central Time (CT)

Prefix Utilization

Geographic Coverage

State

Major Cities

Eau Claire
Wausau
Superior
Stevens Point
Wisconsin Rapids
Marshfield
Menomonie
River Falls
Weston
Hudson
Chippewa Falls
Plover
Marinette
New Richmond
Shawano
Merrill
Rice Lake
Altoona
Kronenwetter
Rhinelander
Antigo
Ashland
Lake Hallie
Waupaca

and 289 more cities

Area Code 715 geographic coverage map (light mode)

Demographics

Detailed demographic and economic data is not yet available for area code 715.

History

Area code 715 is one of the original area codes established in 1947 when the North American Numbering Plan (NANP) was created. It shares its territory with area code area code 534.

County Coverage

Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 715).

County	Population	Share
Marathon, WI	221,652	9.9%
Eau Claire, WI	176,560	7.9%
Dunn, WI	172,769	7.7%
Portage, WI	141,731	6.3%
St. Croix, WI	129,762	5.8%
Chippewa, WI	122,878	5.5%
Wood, WI	87,565	3.9%
Polk, WI	82,765	3.7%
Clark, WI	80,242	3.6%
Shawano, WI	63,810	2.9%
Oneida, WI	63,127	2.8%
Barron, WI	60,820	2.7%
Pierce, WI	58,582	2.6%
Lincoln, WI	55,051	2.5%
Washburn, WI	53,186	2.4%
Douglas, WI	50,484	2.3%
Rusk, WI	44,542	2.0%
Taylor, WI	43,865	2.0%
Adams, WI	43,454	1.9%
Marinette, WI	39,717	1.8%
Waupaca, WI	35,496	1.6%
Burnett, WI	34,715	1.6%
Vilas, WI	31,760	1.4%
Bayfield, WI	30,816	1.4%
Langlade, WI	29,454	1.3%
Sawyer, WI	27,746	1.2%
Jackson, WI	26,705	1.2%
Waushara, WI	23,431	1.0%
Price, WI	22,806	1.0%
Forest, WI	21,824	1.0%
Ashland, WI	19,984	0.9%
Buffalo, WI	18,890	0.8%
Oconto, WI	18,730	0.8%
Trempealeau, WI	18,104	0.8%
Iron, WI	17,047	0.8%
Pepin, WI	15,415	0.7%
Outagamie, WI	13,682	0.6%
Monroe, WI	11,054	0.5%
Juneau, WI	8,262	0.4%
Florence, WI	7,502	0.3%
Menominee, WI	4,100	0.2%
Marquette, WI	1,835	0.1%
Gogebic, MI	985	0.0%

Area Code 715 Family Tree

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Overlays

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All Descendants

Code ▲	State	Type	In Service	Parent
534	WI	overlay	14-Aug-2010	715

Area code 715 was originally assigned in 01-Jan-1947 to serve WI. Over the years, it has generated 1 descendant area code through a combination of geographic splits and overlays as demand for telephone numbers grew.