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Area Code Overview
Area code 559 is a geographic telephone area code in California that went into service on November 14, 1998. The geographic regions covered by this area code overlay has a population of approximately 2,039,282.
Overlay and Dialing Rules
- Area Code: 559
- State: California
- Type: General Purpose Code
- In Service Date: November 14, 1998
- Overlay Complex: 357/559
- Local Dialing Plan: This area requires you to dial 1 and the area code when calling locally.
Estimated Number of Assigned Phone Numbers in Area Code 559
This area code is ranked 100th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 18th out of 39.
6,169,000
Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 559
Wireless
3,024,000 assigned
49.02%
Wireline and VoIP
2,688,000 assigned
43.57%
Other / Unclassified
457,000 assigned
7.41%
Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 559
Estimated assigned wireless phone numbers: 3,024,000
Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.
AT&T Wireless 1,563,000 (51.69%)
T-Mobile 818,000 (27.05%)
Verizon Wireless 642,000 (21.23%)
Optimum Mobile 1,000 (0.03%)
Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 559
Estimated assigned wireline and VoIP phone numbers: 2,688,000
Bandwidth 328,000 (12.20%)
Comcast Business 138,000 (5.13%)
Peerless Network 119,000 (4.43%)
TERRA NOVA TELECOM INC. 71,000 (2.64%)
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 43,000 (1.60%)
Other / Unclassified Assigned Numbering in Area Code 559
Estimated assigned other or unclassified phone numbers: 457,000
TELEPORT COMMUNICATIONS AMERICA, LLC - CA 81,000 (17.72%)
AMERICAN MESSAGING SERVICES, LLC 80,000 (17.51%)
PONDEROSA TEL. CO. 70,000 (15.32%)
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 64,000 (14.00%)
SIERRA TEL. CO., INC. 60,000 (13.13%)
KERMAN TEL. CO. 30,000 (6.56%)
IP HORIZON LLC 22,000 (4.81%)
DUCOR TEL. CO. 20,000 (4.38%)
HD CARRIER LLC 10,000 (2.19%)
FRACTEL, LLC 8,000 (1.75%)
TON80 COMMUNICATIONS, LLC 7,000 (1.53%)
EXIANT COMMUNICATIONS LLC 2,000 (0.44%)
Cities and Towns in Area Code 559
Alpaugh, California Auberry, California Avenal, California Badger, California Big Creek, California Burrel, California Caruthers, California Chowchilla, California Clovis, California Coalinga, California Coarsegold, California Corcoran, California Del Rey, California Dinuba, California Ducor, California Dunlap, California Exeter, California Firebaugh, California Fowler, California Fresno, California Friant, California Grant, California Hanford, California Huron, California Kennedy, California Kerman, California Kingsburg, California Laton, California Lemon Cove, California Lemoore, California Lindsay, California Madera, California Mendota, California Modesto, California North Fork, California O Neals, California Orange Cove, California Parlier, California Pixley, California Porterville, California Raymond, California Reedley, California Riverdale, California San Joaquin, California Sanger, California Selma, California Sequoia, California Shaver Lake, California Springville, California Stratford, California Terra Bella, California Three Rivers, California Tipton, California Tivy Valley, California Tulare, California Visalia, California Wishon, California Woodlake, California These geographic regions are also served by area code 357.
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 559, 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