Comcast (Xfinity)
19,078 ZIP codes · 30 states · 2,000 Mbps max
Available Connection Types
Avg across service area: 1224 Mbps
Avg across service area: 94 Mbps
Largest Markets
| State | ZIP Codes | % of Coverage |
|---|---|---|
| Comcast (Xfinity) in Pennsylvania | 1,833 | 10% |
| Comcast (Xfinity) in California | 1,803 | 9% |
| Comcast (Xfinity) in Illinois | 1,396 | 7% |
| Comcast (Xfinity) in Florida | 1,013 | 5% |
| Comcast (Xfinity) in Michigan | 992 | 5% |
| Comcast (Xfinity) in Virginia | 903 | 5% |
| Comcast (Xfinity) in Minnesota | 880 | 5% |
| Comcast (Xfinity) in Indiana | 807 | 4% |
| Comcast (Xfinity) in Georgia | 751 | 4% |
| Comcast (Xfinity) in West Virginia | 738 | 4% |
See how your connection compares to Comcast (Xfinity)'s advertised 2000 Mbps max speed.
Frequently Asked Questions
How many areas does Comcast (Xfinity) serve?
Comcast (Xfinity) provides internet service in 19,078 ZIP codes across 30 states. The areas served by Comcast (Xfinity) have an average Broadband Grade of B (score: 75/100).
What speeds does Comcast (Xfinity) offer?
Comcast (Xfinity) offers maximum download speeds of 2,000 Mbps and upload speeds of 2,000 Mbps. Average download across their service area is 1224 Mbps. Technologies include Cable (DOCSIS 3.1+), Fiber (FTTH).
Does Comcast (Xfinity) offer fiber internet?
Comcast (Xfinity) does not currently offer fiber-to-the-home internet. Their available technologies include Cable (DOCSIS 3.1+), Fiber (FTTH).
Where is Comcast (Xfinity) available?
Comcast (Xfinity) is available in 30 states. Their largest markets are Pennsylvania (1,833 ZIPs), California (1,803 ZIPs), Illinois (1,396 ZIPs).
For this entity, the underlying data on this page comes from the FCC Broadband Data Collection (BDC). The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
The methodology behind every numeric value on this page is publicly documented on the the FCC Broadband Data Collection (BDC) portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. ZIPs, counties, and states. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: FCC Broadband Data Collection, 2026.