Comcast (Xfinity) Internet in South Carolina
0 ZIP codes covered · 2,000 Mbps max download · Cable (DOCSIS 3.1+) + Fiber (FTTH)
Comcast (Xfinity) in South Carolina: What You Get
Comcast (Xfinity) is one of 10 broadband providers active across South Carolina, with reported coverage in 0 ZIP codes out of 424 statewide. The carrier delivers service over Cable (DOCSIS 3.1+) and Fiber (FTTH), with an advertised maximum of 2,000 Mbps download and 2,000 Mbps upload at the top tier where the network supports it. Statewide, South Carolina averages 987 Mbps advertised download and 99% fiber-to-the-home coverage per the latest FCC National Broadband Map.
FCC Broadband Data Collection coverage is filed at the location level by every facilities-based provider and rolled up to ZIP, county, and state aggregates roughly every six months. A Comcast (Xfinity) report inside a South Carolina ZIP code means at least one address inside the ZIP qualifies for service; it does not guarantee every home in the ZIP can subscribe at the advertised peak tier. For a definitive address-level check, use the FCC's public lookup or call the carrier directly.
See how your connection compares to Comcast (Xfinity)'s advertised 2,000 Mbps tier in South Carolina.
Other South Carolina Internet Providers
Comcast (Xfinity) South Carolina FAQ
Is Comcast (Xfinity) available in South Carolina?
Yes. Comcast (Xfinity) reports broadband service in 0 South Carolina ZIP codes in the FCC Broadband Data Collection filings as of April 2026. Coverage is reported at the location level and rolled up to ZIP code, so individual addresses inside a covered ZIP may or may not qualify for the advertised maximum tier.
What speeds does Comcast (Xfinity) offer in South Carolina?
Comcast (Xfinity) reports a maximum advertised download of 2,000 Mbps and maximum upload of 2,000 Mbps using Cable (DOCSIS 3.1+), Fiber (FTTH) in South Carolina. Real-world median throughput typically runs 60-80% of advertised speeds during peak evening hours per M-Lab measurement data.
Does Comcast (Xfinity) offer fiber internet in South Carolina?
Comcast (Xfinity) does not currently report fiber-to-the-home (FTTP) service in South Carolina. Their available technologies in the state are Cable (DOCSIS 3.1+), Fiber (FTTH).
How does Comcast (Xfinity) compare to other South Carolina internet providers?
South Carolina has an average of 10 reported broadband providers per ZIP code and an average advertised download of 987 Mbps statewide. T-Mobile and Charter (Spectrum) are the next-largest reporting providers in the state. See the full South Carolina state profile for the complete competitive landscape.
How can I check Comcast (Xfinity) availability at my South Carolina address?
Look up your ZIP code on this site to see every provider that reports coverage there, including Comcast (Xfinity). The FCC also operates an address-level lookup at broadbandmap.fcc.gov where you can file a challenge if the reported coverage does not match what is actually serviceable at your home.
Source: FCC Broadband Data Collection, 2026.