Area Code Overview

Area code 509 is a geographic telephone area code in Washington that went into service on January 1, 1957. The geographic regions covered by this area code overlay has a population of approximately 1,688,287.

Overlay and Dialing Rules

Area Code: 509
State: Washington
Type: General Purpose Code
In Service Date: January 1, 1957
Overlay Complex: 509
Local Dialing Plan: This area does require you to dial the area code when calling locally.

Estimated Number of Assigned Phone Numbers in Area Code 509

This area code is ranked 136th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 3rd out of 6.

5,746,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 509

Total assigned 5,746,000

Wireless

2,286,000 assigned

39.78%

Wireline and VoIP

3,203,000 assigned

55.74%

Other / Unclassified

257,000 assigned

4.47%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 509

Estimated assigned wireless phone numbers: 2,286,000

Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.

Verizon Wireless 896,000 (39.20%)

AT&T Wireless 661,000 (28.92%)

T-Mobile 569,000 (24.89%)

UScellular 131,000 (5.73%)

INLAND CELLULAR LLC 28,000 (1.22%)

Optimum Mobile 1,000 (0.04%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 509

Estimated assigned wireline and VoIP phone numbers: 3,203,000

Lumen 1,259,000 (39.31%)

Onvoy 971,000 (30.32%)

ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 323,000 (10.08%)

Bandwidth 108,000 (3.37%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 99,000 (3.09%)

TERRA NOVA TELECOM INC. 78,000 (2.44%)

CHARTER IP ENABLED SERVICES, LLC 76,000 (2.37%)

Comcast Business 57,000 (1.78%)

Peerless Network 52,000 (1.62%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 37,000 (1.16%)

Spectrum 37,000 (1.16%)

PEND OREILLE TELEPHONE COMPANY 23,000 (0.72%)

Other / Unclassified Assigned Numbering in Area Code 509

Estimated assigned other or unclassified phone numbers: 257,000

CONSOLIDATED COMMUNICATIONS OF WASHINGTON COMPANY 50,000 (19.46%)

TELEPORT COMMUNICATIONS AMERICA, LLC - WA 41,000 (15.95%)

ELTOPIA COMMUNICATIONS, LLC - WA 37,000 (14.40%)

COMPUTERS 5*, INC. DBA LOCALTEL - WA 28,000 (10.89%)

INLAND TEL CO 21,000 (8.17%)

AMERICAN MESSAGING SERVICES, LLC 20,000 (7.78%)

PIONEER TEL. CO. 20,000 (7.78%)

ASOTIN TEL CO 10,000 (3.89%)

INTRADO COMMUNICATIONS, LLC 7,000 (2.72%)

AXXIS COMMUNICATION, INC. - WA 6,000 (2.33%)

HD CARRIER LLC 3,000 (1.17%)

EXIANT COMMUNICATIONS LLC 2,000 (0.78%)

Cities and Towns in Area Code 509

Almira, Washington Anatone, Washington Asotin, Washington Benton City, Washington Brewster, Washington Bridgeport, Washington Cheney, Washington Chewelah, Washington Clarkston, Washington Cle Elum, Washington Colfax, Washington Columbia, Washington Colville, Washington Connell, Washington Coulee City, Washington Coulee Dam, Washington Cowiche, Washington Creston, Washington Curlew, Washington Cusick, Washington Dallesport, Washington Davenport, Washington Dayton, Washington Deer Park, Washington Douglas County, Washington Edwall, Washington Elk, Washington Ellensburg, Washington Endicott, Washington Ephrata, Washington Eureka, Washington Farmington, Washington Garfield, Washington George, Washington Glenwood, Washington Goldendale, Washington Grandview, Washington Granger, Washington Harrah, Washington Harrington, Washington Ione, Washington Kennewick, Washington Kettle Falls, Washington Klickitat, Washington Lacrosse, Washington Liberty Lake, Washington Lind, Washington Loomis, Washington Loon Lake, Washington Lyle, Washington Mabton, Washington Mathews Corner, Washington Mattawa, Washington Medical Lake, Washington Metaline Falls, Washington Molson, Washington Moses Lake, Washington Naches, Washington Nespelem, Washington Newman Lake, Washington Newport, Washington Nile, Washington Northport, Washington Oakesdale, Washington Odessa, Washington Omak, Washington Oroville, Washington Othello, Washington Palouse, Washington Pasco, Washington Pateros, Washington Paterson, Washington Pomeroy, Washington Prescott, Washington Prosser, Washington Pullman, Washington Quincy, Washington Reardan, Washington Republic, Washington Richland, Washington Rimrock, Washington Ritzville, Washington Rockford, Washington Roosevelt, Washington Rosalia, Washington Roslyn, Washington Saint John, Washington Selah, Washington Soap Lake, Washington Spangle, Washington Spokane, Washington Sprague, Washington Springdale, Washington Starbuck, Washington Stevenson, Washington Sunnyside, Washington Tekoa, Washington Tieton, Washington Tonasket, Washington Toppenish, Washington Touchet, Washington Trout Lake, Washington Twisp, Washington Uniontown, Washington Waitsburg, Washington Walla Walla, Washington Wapato, Washington Warden, Washington Washtucna, Washington Wenatchee, Washington White Salmon, Washington White Swan, Washington Whitstran, Washington Wilbur, Washington Willard, Washington Wilson Creek, Washington Yakima, Washington

How These Figures Were Built

These figures are estimates based on public phone-number assignment records. They are meant to show the likely mix of assigned phone numbers associated with area code 509, not live customer counts.

Some providers may have assigned phone numbers tied to this area code even if they do not actively market or sell service locally. These figures reflect public number-assignment records, not confirmed local service availability.

They also do not reflect number portability at the individual phone-number level, so some numbers may now be used on a different network or by a different provider than the original assignment records suggest.

Population data and locality matching provided by GeoNames.

Last refreshed: April 15, 2026 6:22 pm