AT&T Fiber vs Xfinity
These two overlap in 352 metro areas and 7,318 towns and cities, so for a lot of people this is a real choice rather than a hypothetical one. The first question is not which is better. It is which of them can reach you.
AT&T Fiber vs Xfinity at a glance
| Measure | AT&T Fiber | Xfinity |
|---|---|---|
| Main technology | Fiber | Cable |
| Residential locations on that technology | 19,375,365 | 37,853,193 |
| Single technology or mixed | Mixed | Mixed |
| Full coverage detail | Where AT&T Fiber is available | Where Xfinity is available |
We do not publish speeds or prices here. Both providers change them constantly and by market, and a stale number is worse than no number. Coverage is the part that is federally reported and verifiable.
Where you can get both
Metro areas where both AT&T Fiber and Xfinity report service, ranked by how well covered the less available of the two is because that is what decides whether you genuinely get a choice.
These percentages count each operator's whole reported network. 23.8% of what AT&T Fiber files with the FCC is fiber. The FCC publishes that split nationally and never per metro, so a high number here means the operator reaches the metro, not that it reaches it on that technology.
| Metro area | AT&T Fiber | Xfinity |
|---|---|---|
| San Francisco-Oakland-Berkeley, CA Metro Area | 91% | 98% |
| Miami-Fort Lauderdale-Pompano Beach, FL Metro Area | 87% | 94% |
| Chicago-Naperville-Elgin, IL-IN-WI Metro Area | 87% | 95% |
| Key West, FL Micro Area | 85% | 99% |
| Memphis, TN-MS-AR Metro Area | 83% | 88% |
| Detroit-Warren-Dearborn, MI Metro Area | 83% | 87% |
| San Jose-Sunnyvale-Santa Clara, CA Metro Area | 81% | 89% |
| Napa, CA Metro Area | 81% | 89% |
| Atlanta-Sandy Springs-Alpharetta, GA Metro Area | 82% | 81% |
| Vallejo, CA Metro Area | 81% | 92% |
| Port St. Lucie, FL Metro Area | 80% | 91% |
| Nashville-Davidson--Murfreesboro--Franklin, TN Metro Area | 83% | 80% |
| Panama City, FL Metro Area | 79% | 85% |
| Sebastian-Vero Beach, FL Metro Area | 79% | 96% |
| Jacksonville, FL Metro Area | 78% | 94% |
| Kokomo, IN Metro Area | 78% | 91% |
| Santa Rosa-Petaluma, CA Metro Area | 78% | 93% |
| Rome, GA Metro Area | 77% | 90% |
| Decatur, IL Metro Area | 77% | 86% |
| Calhoun, GA Micro Area | 76% | 92% |
| South Bend-Mishawaka, IN-MI Metro Area | 75% | 84% |
| Rockford, IL Metro Area | 74% | 80% |
| Ann Arbor, MI Metro Area | 74% | 81% |
| Muncie, IN Metro Area | 74% | 93% |
| Sacramento-Roseville-Folsom, CA Metro Area | 74% | 75% |
Showing 25 of 352 metro areas where both operate.
Where only one of them reaches
AT&T Fiber reports service in 47 states and Xfinity in 41, and they share 39 of them. Overlap is the exception, not the rule, so if you are outside the table above this is the part that answers your question.
522 metro areas have AT&T Fiber and not Xfinity
- Milwaukee-Waukesha, WI Metro Area 89% covered
- Cleveland-Elyria, OH Metro Area 88% covered
- Akron, OH Metro Area 87% covered
- Vicksburg, MS Micro Area 83% covered
- Findlay, OH Micro Area 82% covered
- Louisville/Jefferson County, KY-IN Metro Area 82% covered
- Amarillo, TX Metro Area 82% covered
- Evansville, IN-KY Metro Area 82% covered
2 metro areas have Xfinity and not AT&T Fiber
- Los Alamos, NM Micro Area 97% covered
- Poughkeepsie-Newburgh-Middletown, NY Metro Area 3% covered
States where only AT&T Fiber reports service: Iowa, Montana, Nebraska, Nevada, North Dakota, Oklahoma, South Dakota, Wyoming. States where only Xfinity reports service: Idaho, New York.
Showing the eight best covered of each. Ranked by reported coverage within the metro, from the same FCC filing as the table above. Providers self report and overstate, so read these as a ceiling on where a company will sell to you, not a promise about your street.
Which should you pick?
Honestly, in most of the places above only one of them will actually reach your building, and that settles it. Where both do reach you, the useful question is the technology rather than the brand.
That is the case here: AT&T Fiber is mainly fiber and Xfinity is mainly cable. The practical difference is upload speed and consistency rather than headline download speed, we explain what that means here.
See which one reaches your address →
What we will not do is tell you one is better because it pays us more. See the affiliate disclosure for how that works.