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Astound vs Xfinity in San Mateo
Same $40 starting price, but Xfinity reaches nearly the whole city while Astound’s faster-value plans only cover about two-thirds of San Mateo.
Xfinity is the safer pick for most San Mateo homes, with ~99% coverage, faster top speeds (up to 2000/300 Mbps where available), and a slightly higher speed score of 94. Astound matches the $40/mo starting price and posts a strong 90 speed score, but reaches only about 66% of the city. Choose Xfinity if you want the widest availability and headroom; choose Astound if it’s live on your block and you want a strong-value alternative at the same intro price.
At a glance
Astound vs. Xfinity, side by side.
| Provider | Type | Top speed | City coverage | Starting price | Best for |
|---|---|---|---|---|---|
| Astound |
Cable | 1 Gig 50 Mbps upload |
66% | $40/mo | Budget-friendly |
| Xfinity |
Cable | 2 Gig 300 Mbps upload |
99% | $40/mo | Fastest plans here |
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
Because Astound reaches about 66% of San Mateo versus Xfinity’s ~99%, the winner can change block to block. In many neighborhoods you’ll have both to compare, while others may only show Xfinity as an option. Always run an address check before assuming Astound is available where you live.
| ZIP | Neighborhoods | Coverage | Top speed | Speed Score | Winner | |||
|---|---|---|---|---|---|---|---|---|
| Astound | Xfinity | Astound | Xfinity | Astound | Xfinity | |||
| 94402 | San Mateo Park, Baywood, Aragon, Sugarloaf | 84% | 99% | 1 Gig | 2 Gig | 89 | 95 | Xfinity |
| 94401 | Downtown San Mateo, North Central, Central San Mateo, Bay Meadows | 97% | 100% | 1 Gig | 2 Gig | 91 | 95 | Xfinity |
| 94403 | Laurelwood, Hillsdale, Beresford Park, 19th Avenue Park | 92% | 99% | 1 Gig | 2 Gig | 90 | 95 | Xfinity |
| 94404 | Foster City, Mariners Island, Bay Meadows, Bridgepointe | 0% | 94% | — | 2 Gig | — | 94 | 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.
- 1 Gig down · 1 Gig up Fiber
- 1 Gig down · 50 Mbps up Cable
- 1 Gig down · 10 Mbps up Copper
- 2 Gig down · 300 Mbps up Cable
- 2 Gig down · 300 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 Astound available at my address in San Mateo?
Astound covers about 66% of San Mateo, so it may or may not reach your block, while Xfinity covers roughly 99% of the city. Enter your exact address on both providers’ checkers to confirm which is actually serviceable before you decide.
which is cheaper in San Mateo, Astound or Xfinity?
Both start at the same $40/mo in San Mateo, so neither wins on the headline price. These are promotional starting rates, so before signing confirm the post-promo rate, any equipment fees, and whether a contract is required for each.
which is faster and is it enough for gaming and 4K?
Xfinity is faster on paper at up to 2000/300 Mbps (where available) with a 94 speed score, versus Astound’s up to 1500/50 Mbps and 90 speed score. Both are plenty for 4K and gaming, so pick based on upload needs and which plan is available at your address.