South Carolina broadband internet costs an average of $77.85 per month in 2026, based on official FCC and BroadbandNow data. Pricing ranges from $45/mo to $80/mo depending on your speed tier, provider choice, and whether you are on a promotional rate.
Internet Infrastructure in South Carolina
Fiber optic coverage in South Carolina stands at 46%, which is below the national average of 48%. The state has approximately 4 major ISPs competing for residential broadband customers. Limited provider competition means fewer choices, especially in rural areas where satellite internet is the primary fallback.
The top internet providers in South Carolina include Spectrum (best value plans), AT&T Fiber (highest speeds), and AT&T Fiber (fiber optic service where available). Cable internet remains the dominant connection type across most of the state.
South Carolina Internet Pricing by Speed Tier
For 100 Mbps (basic broadband suitable for small households), expect to pay around $45/mo in South Carolina. A 300 Mbps mid-range plan — the sweet spot for most families streaming 4K video and working remotely — costs approximately $78/mo. 500 Mbps and 1 Gbps gigabit fiber plans range from $65/mo to $80/mo depending on availability.
Urban centers in South Carolina benefit from strong fiber deployment. Internet costs in rural locations can be 30-50% higher than the state average due to infrastructure costs and limited provider options. Fixed wireless (T-Mobile 5G Home, Verizon 5G) and satellite (Starlink, HughesNet) serve as alternatives where cable and fiber do not reach.
Hidden Fees to Watch For in South Carolina
Like all US states, South Carolina residents face common broadband hidden fees. Equipment rental charges add $10-15/month ($120-180/year) for modem and router combos that can be purchased outright for $100-180. Post-promotional price increases average 47% — meaning your $49.99 introductory rate jumps to approximately $73-85 after 12 months. Data caps (1.2TB on Xfinity and Cox) trigger overage charges of $10 per 50GB. Check your provider's contract terms before signing.
Calculate Your South Carolina Internet Bill
Use our free Monthly Internet Bill Calculator to estimate your actual broadband cost in South Carolina, including state-adjusted pricing. Our Hidden Fee Calculator breaks down exactly what equipment rental, overage charges, and promotional increases add to your monthly bill. For residents moving to or from South Carolina, our State Cost Comparison tool shows exactly how your internet expenses will change.