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South Carolina

Home » South Carolina Updated on: November 17, 2025

South Carolina’s broadband landscape is led by AT&T Fiber and Spectrum. AT&T Fiber provides the best overall performance with symmetrical speeds and a 99.9% reliability rating across the Columbia, Charleston, and Greenville markets. Spectrum remains the state’s coverage champion, blanketing nearly 92% of the Palmetto State with gigabit-speed cable. For residents in the Upstate or the Midlands seeking high-speed fiber without national carrier pricing, Lumos Fiber and Frontier have expanded multi-gigabit services to over 200,000 additional homes in 2026.

Top 5 Internet Providers in South Carolina (April 2026 Rankings)

Provider Connection Type Max Download Speed Starting Price Availability
AT&T Fiber Fiber 5 Gbps $55.00/mo 42.1%
Spectrum Cable 1 Gbps $30.00/mo 91.8%
Lumos Fiber Fiber 5 Gbps $40.00/mo 18.0%+
Frontier Fiber Fiber 5 Gbps $44.99/mo 12.0%
Verizon 5G 5G Wireless 1 Gbps $35.00/mo* 78.5%

*Verizon pricing requires a qualifying mobile plan and AutoPay. Wired prices reflect promotional rates for the first 12–24 months.

South Carolina’s Regional Coverage Breakdown

From the Blue Ridge Mountains to the Lowcountry, South Carolina’s internet options vary significantly by geography:

  • The Lowcountry (Charleston, Myrtle Beach, Hilton Head): This region is a “Cable Stronghold.” Spectrum and Xfinity dominate the coastline, but AT&T Fiber has made massive inroads in Mount Pleasant and Summerville.

  • The Midlands (Columbia, Lexington, Aiken): AT&T Fiber and Lumos are the top choices here. Columbia is one of the most fiber-dense cities in the South, offering residents a choice of multiple gigabit-speed providers.

  • The Upstate (Greenville, Spartanburg, Rock Hill): This region benefits from a mix of Spectrum cable and specialized fiber from Frontier and Comporium. Comporium is a local favorite in York and Lancaster counties, offering localized customer support and fiber speeds up to 1 Gbps.

Why South Carolina Residents are Switching in 2026

  1. Symmetrical Multi-Gigabit: With the expansion of the tech corridor in the Upstate, residents are prioritizing fiber from AT&T and Lumos to get equal upload speeds for hybrid work and high-res video conferencing.

  2. Price-Lock Guarantees: Spectrum and Frontier have introduced 2-year and 3-year price locks for 2026, helping SC households combat inflation with predictable monthly bills.

  3. Wireless “No-Drill” Setups: Over 25% of SC renters have switched to Verizon 5G or T-Mobile because it avoids the need for professional installation and HOA approval for cable lines.

Internet Availability in Top South Carolina Cities

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