Area codes 715 and 534

In October 1947, AT&T published the first nationwide telephone numbering plan in coordination with independent telephone operators. Eighty-six NPAs across North America were initially designated, each assigned a unique three-digit area code. Wisconsin was divided into two NPAs, with the northern half of the state receiving the code 715 and the rest being assigned area code 414.

As each area code could only support a maximum of 7.92 million numbers,^[1] NPAs would be split over time to avoid telephone number exhaustion. In 1955 the southern Wisconsin NPA was split in half, with the western portion being assigned the area code 608. By 1967, the number of nationally assigned area codes had increased to 129,^[2] with the southern Wisconsin NPA fracturing again in 1997 and 1999 to accommodate additional numbers.

Due to northern Wisconsin's low population density, 715 was for a long time one of the few original area codes never to have been split or overlaid. But by 2010, the proliferation of cellphones and pagers had almost exhausted 715's telephone numbers. Central office code relief was implemented by adding area code 534 to form an overlay that summer.^[3]

Ashland, Barron, Bayfield, Buffalo, Burnett, Chippewa, Clark, Douglas, Dunn, Eau Claire, Florence, Forest, Iron, Jackson, Langlade, Lincoln, Marathon, Marinette, Menominee, Oconto, Oneida, Outagamie, Pepin, Pierce, Polk, Portage, Price, Rusk, Saint Croix, Sawyer, Shawano, Taylor, Trempealeau, Vilas, Washburn, Waupaca, Waushara, and Wood

Abbotsford, Alma Center, Almena, Almond, Altoona, Amberg, Amery, Amherst, Amherst Junction, Aniwa, Antigo, Arbor Vitae, Argonne, Arkansaw, Armstrong Creek, Arpin, Ashland, Athelstane, Athens, Auburndale, Augusta, Babcock, Baldwin, Balsam Lake, Bancroft, Barron, Barronett, Bay City, Bayfield, Bear Creek, Beecher, Beldenville, Benoit, Big Falls, Birchwood, Birnamwood, Black River Falls, Blenker, Bloomer, Bonduel, Boulder Junction, Bowler, Boyceville, Boyd, Brantwood, Brill, Brokaw, Bruce, Brule, Bryant, Butternut, Cable, Cadott, Cameron Caroline, Catawba, Cecil, Centuria, Chetek, Chili, Chippewa Falls, Clam Lake, Clayton, Clear Lake, Cleghorn, Clintonville, Colby, Colfax, Coloma, Comstock, Conover, Conrath, Cornell, Cornucopia, Couderay, Crandon, Crivitz, Cumberland, Curtiss, Cushing, Custer, Dallas, Danbury, Deer Park, Deerbrook, Dorchester, Downing, Downsville, Dresser, Drummond, Dunbar, Durand, Eagle River, East Ellsworth, Eau Claire, Eau Galle, Edgar, Edgewater, Eland, Elcho, Elderon, Eleva, Elk Mound, Ellsworth, Elmwood, Elton, Embarrass, Exeland, Fairchild, Fall Creek, Fence, Fifield, Florence, Foxboro, Frederic, Galloway, Gile, Gilman, Gilmanton, Gleason, Glen Flora, Glenwood City, Glidden, Goodman, Gordon, Grand View, Granton, Grantsburg, Green Valley, Greenwood, Gresham, Hager City, Hammond, Hancock, Hannibal, Harshaw, Hatley, Haugen, Hawkins, Hawthorne, Hayward, Hazelhurst, Heafford Junction, Herbster, Hertel, Hewitt, High Bridge, Hixton, Holcombe, Houlton, Hudson, Humbird, Hurley, Independence, Iola, Irma, Iron Belt, Iron River, Jim Falls, Jump River (CDP), Town of Jump River, Junction City, Kennan, Keshena, King, Knapp, Kronenwetter, La Pointe, Lac du Flambeau, Ladysmith, Lake Nebagamon, Lake Tomahawk, Lakewood, Land O' Lakes, Laona, Leopolis, Long Lake, Loyal, Lublin, Luck, Maiden Rock, Manitowish Waters, Maple, Marathon, Marengo, Marinette, Marion, Marshfield, Mason, Mattoon, McNaughton, Medford, Mellen, Menomonie, Mercer, Merrill, Merrillan, Mikana, Milladore, Millston, Milltown, Minocqua, Minong, Mondovi, Montreal, Mosinee, Mountain, Neillsville, Nekoosa, Nelson, Nelsonville, Neopit, New Auburn, New Richmond, Niagara, Odanah, Ogema, Ojibwa, Osceola, Osseo, Owen, Park Falls, Pearson, Pelican Lake, Pembine, Pepin, Peshtigo, Phelps, Phillips, Phlox, Pickerel, Pigeon Falls, Pittsville, Plainfield, Plover, Plum City, Poplar, Port Edwards, Port Wing, Porterfield, Prairie Farm, Prentice, Prescott, Presque Isle, Radisson, Rhinelander, Rib Lake, Rice Lake, Ridgeland, Ringle, River Falls, Roberts, Rock Falls, Rosholt, Rothschild, Rudolph, Saint Croix Falls, St. Germain, Sand Creek, Sarona, Saxon, Sayner, Scandinavia, Schofield, Shawano, Sheldon, Shell Lake, Siren, Solon Springs, Somerset, South Range, Spencer, Spooner, Spring Valley, Springbrook, Stanley, Star Lake, Star Prairie, Stetsonville, Stevens Point, Stockholm, Stone Lake, Stratford, Strum, Summit Lake, Superior, Taylor, Thorp, Three Lakes, Tigerton, Tilleda, Tomahawk, Tony, Townsend, Trego, Tripoli, Turtle Lake, Unity, Upson, Vesper, Wabeno, Wascott, Washburn, Waupaca, Wausau, Wausaukee, Webb Lake, Webster, Westboro, Weyerhaeuser, Wheeler, White Lake, Whitehall, Willard, Wilson, Winter, Wisconsin Rapids, Withee, Wittenberg, Woodruff, Woodville, and Zachow

• List of NANP area codes

• NANPA area code map of Wisconsin
• List of exchanges from AreaCodeDownload.com, 715 Area Code

45°15′N 90°00′W / 45.250°N 90.000°W / 45.250; -90.000