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AT&T vs Xfinity in Knoxville
AT&T brings cheaper, faster symmetrical fiber, while Xfinity offers comparable cable coverage in Knoxville but with far slower uploads capped at 300 Mbps.
AT&T Fiber is the stronger pick here, winning on speed (up to 5000 Mbps symmetrical vs Xfinity’s 2000/300), price ($35 vs $40), and a slightly higher speed score (97 vs 94). Both cover roughly 89% of Knoxville, so availability is close to a wash citywide. Choose AT&T if you can get fiber at your address and want fast uploads for gaming, WFH, or big transfers. Xfinity is a solid fallback where fiber hasn’t reached your block, since cable is widely built out.
At a glance
AT&T vs. Xfinity, side by side.
| Provider | Type | Top speed | City coverage | Starting price | Best for |
|---|---|---|---|---|---|
| AT&T |
Fiber | 5 Gig 5 Gig upload |
89% | $35/mo | Top fiber speeds |
| Xfinity |
Cable | 2 Gig 300 Mbps upload |
89% | $40/mo | Solid cable option |
Coverage map
Two different questions, two views. Top speed shows who offers the faster plan where you can actually get it. Coverage shows who reaches more of each ZIP. Or pick a single provider to see just its footprint.
Neighborhood breakdown
Both providers claim about 89% coverage in Knoxville, but the overlap isn’t identical block to block. AT&T fiber tends to concentrate in built-out areas, so a given street may get fiber, cable, or both. Always check your exact address, since the winner can flip within the same neighborhood.
| ZIP | Neighborhoods | Coverage | Top speed | Speed Score | Winner | |||
|---|---|---|---|---|---|---|---|---|
| AT&T | Xfinity | AT&T | Xfinity | AT&T | Xfinity | |||
| 37921 | West Knoxville, Lonsdale, Mechanicsville, Marble City | 74% | 100% | 5 Gig | 2 Gig | 92 | 95 | Xfinity |
| 37920 | South Knoxville, Vestal, Island Home, Lake Forest | 74% | 97% | 5 Gig | 2 Gig | 92 | 95 | Xfinity |
| 37918 | Fountain City, Halls Crossroads, Gibbs | 69% | 100% | 5 Gig | 2 Gig | 91 | 95 | Xfinity |
| 37917 | North Knoxville, Old North Knoxville, Whittle Springs, Edgewood | 60% | 100% | 5 Gig | 2 Gig | 90 | 95 | Xfinity |
| 37938 | Halls, Halls Crossroads, North Knoxville | 13% | 95% | 5 Gig | 2 Gig | 80 | 94 | Xfinity |
| 37914 | East Knoxville, Chilhowee Park, Burlington, Holston Hills | 69% | 94% | 5 Gig | 2 Gig | 91 | 94 | Xfinity |
| 37919 | Bearden, Sequoyah Hills, West Hills, Rocky Hill | 63% | 99% | 5 Gig | 2 Gig | 90 | 95 | Xfinity |
| 37912 | Fountain City, Inskip, Cedar Lane | 70% | 100% | 5 Gig | 2 Gig | 92 | 95 | Xfinity |
| 37923 | Cedar Bluff, West Hills, Ball Camp | 69% | 99% | 5 Gig | 2 Gig | 91 | 95 | Xfinity |
| 37922 | Farragut, Concord, Choto | 60% | 80% | 5 Gig | 2 Gig | 90 | 91 | Xfinity |
| 37924 | East Knoxville, Carter, Ritta | 52% | 97% | 5 Gig | 2 Gig | 88 | 95 | Xfinity |
| 37931 | Karns, Hardin Valley, Solway | 61% | 100% | 5 Gig | 2 Gig | 90 | 95 | Xfinity |
| 37915 | East Knoxville, Morningside, Parkridge, Fourth and Gill | 58% | 95% | 5 Gig | 2 Gig | 89 | 94 | Xfinity |
| 37909 | West Hills, West Haven, Cedar Bluff area | 84% | 100% | 5 Gig | 2 Gig | 94 | 95 | Xfinity |
| 37932 | Hardin Valley, Farragut area, Pellissippi | 43% | 85% | 5 Gig | 2 Gig | 86 | 92 | Xfinity |
| 37916 | Fort Sanders, University of Tennessee, Cumberland Avenue Strip | 29% | 96% | 5 Gig | 2 Gig | 83 | 94 | Xfinity |
| 37902 | Downtown Knoxville, World’s Fair Park, Gay Street, Old City | 39% | 93% | 5 Gig | 2 Gig | 85 | 94 | Xfinity |
| 37996 | University of Tennessee, UT Campus, Fort Sanders | 0% | 56% | — | 2 Gig | — | 86 | Xfinity |
| 37901 | Downtown Knoxville (PO Box/administrative) | 39% | 93% | 5 Gig | 2 Gig | 85 | 94 | Xfinity |
| 37939 | West Knoxville, Bearden area | 67% | 100% | 5 Gig | 2 Gig | 91 | 95 | Xfinity |
| 37928 | North Knoxville (PO Box/administrative) | 82% | 100% | 5 Gig | 2 Gig | 94 | 95 | Xfinity |
| 37927 | Downtown Knoxville (PO Box/administrative) | 83% | 100% | 5 Gig | 2 Gig | 94 | 95 | Xfinity |
| 37933 | West Knoxville, Hardin Valley, Farragut area | 0% | 5% | — | 1 Gig | — | 76 | Xfinity |
| 37940 | South Knoxville, Knoxville | 88% | 100% | 5 Gig | 2 Gig | 95 | 95 | Xfinity |
Speed Score (0–100) blends each provider’s coverage and top speed in that specific ZIP, so it moves as availability changes street to street.
Which is better for…
The right pick comes down to what you actually do online.
Get connected
Pick your provider and check availability at your address.
- 5 Gig down · 5 Gig up Fiber
- 1 Gig down · 1 Gig up Fiber
- 2 Gig down · 300 Mbps up Cable
- 1 Gig down · 35 Mbps up Fiber
- 1 Gig down · 35 Mbps up Cable
See what’s actually available at your address
Coverage changes from one street to the next. Check your exact address in seconds.
Check my addressFrequently asked questions
Is AT&T fiber available at my Knoxville address or should I just get Xfinity?
AT&T covers roughly 89% of Knoxville and Xfinity covers about 89% too, so odds are good for either, but neither reaches every home. Enter your exact address on both providers’ sites to confirm fiber availability before deciding, since coverage varies block to block.
Which is actually cheaper, AT&T or Xfinity, once I’m paying?
AT&T starts at $35 per month versus Xfinity’s $40, making AT&T the cheaper headline rate. Note these are promotional starting prices, so confirm the post-promo rate, equipment fees, and any contract terms with each provider before you sign.
Is AT&T or Xfinity fast enough for gaming, working from home, and 4K?
AT&T reaches up to 5000/5000 Mbps where available with a 97 speed score, while Xfinity tops out at 2000/300 Mbps with a 94 speed score. Both handle 4K and WFH, but for heavy uploads and gaming, check whether AT&T’s fiber tier is offered at your address.