Best Internet Providers in Castro-Upper Market, San Francisco, CA
All 11 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Castro-Upper Market, San Francisco, CA
Castro-Upper Market has 11 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, DSL, and Fixed Wireless internet are available in the neighborhood. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Castro-Upper Market.
Ranks compare Castro-Upper Market with the 43 neighborhoods in San Francisco.
The Best Internet in Castro-Upper Market, San Francisco, CA at a Glance
Castro-Upper Market Internet Providers, Ranked by Coverage, Speed and Customer Ratings
XFINITY
Connection
Customer Rating
Cable
EarthLink
Connection
Customer Rating
Fiber
DSL
Fixed Wireless
AT&T
Connection
Customer Rating
Fiber
DSL
Fixed Wireless
Astound Broadband
Connection
Customer Rating
Cable
Providers with less than 1% coverage in this neighborhood are excluded from the list. To see if one of these providers is available at your home, please use the address search above.
Speed and technology may vary by address for all providers. Please note we may have a financial relationship with some of the providers above, which does not impact the customer ratings displayed. Customer ratings listed above are national ratings, local Castro-Upper Market ratings may vary and are shown below.
Who is the Best Internet Provider in Castro-Upper Market, San Francisco, CA?
Sonic is the best internet provider in Castro-Upper Market based on California customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, Sonic had the best reviews at the local, state, and national levels versus all available providers in Castro-Upper Market, making it a solid recommendation among providers with reviews. Sonic is an option for 45.36% of the neighborhood.
Which Providers are Available at my Home in Castro-Upper Market?
Coverage changes block by block. Pick a provider and a technology to see where its service reaches: the darker the area, the larger the share of homes it covers. For your exact address, use the address search above.
Coverage map for each provider in Castro-Upper Market, San Francisco
- AT&T - fiber coverage map
- EarthLink - fiber coverage map
- XFINITY - cable coverage map
- Astound Broadband - cable coverage map
- GeoLinks - fixed wireless coverage map
- Verizon - fixed wireless coverage map
- Sonic - fiber coverage map
- Unwired - fixed wireless coverage map
- Etheric Networks - fixed wireless coverage map
- AT&T - dsl coverage map
- EarthLink - dsl coverage map
- T-Mobile Home Internet - fixed wireless coverage map
- AT&T - fixed wireless coverage map
- EarthLink - fixed wireless coverage map
- Google Fiber - fixed wireless coverage map
How Castro-Upper Market Compares to the Rest of San Francisco
Castro-Upper Market's report card score is tied 24th of 43 and its connectivity index is tied 18th of 43.
| Measure | Castro-Upper Market | Rank among neighborhoods in San Francisco | San Francisco | San Francisco County | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 61.9% | 25th of 43 | 69.5% | 66.1% | 71.5% | Outer Sunset (100.0%) |
| Average top speed | 3,018 Mbps | 23rd of 43 | 4,934 Mbps | 4,165 Mbps | 3,486 Mbps | Excelsior (9,809 Mbps) |
| Providers at a typical address | 11.2 | 6th of 43 | 9.7 | 10.3 | 7.1 | Noe Valley and Potrero (12.1) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.0 | Tied 26th of 43 | 2.7 | 2.3 | 2.7 | Silver Terrace (3.6) |
| Workers who work from home | 43% | Tied 3rd of 43 | 25% | 30% | 15% | Cow Hollow (45%) |
| Homes with a computer, tablet or phone | 98% | Tied 7th of 43 | 97% | 97% | 96% | Cow Hollow and Duboce Triangle and 4 more (99%) |
| Homes with internet | 97% | Tied 3rd of 43 | 95% | 93% | 91% | Duboce Triangle and Noe Valley (98%) |
| Homes on fiber, cable or DSL | 91% | 4th of 43 | 84% | 82% | 76% | Saint Francis Wood (95%) |
| More about the households here | ||||||
| Homes with a desktop or laptop | 95% | Tied 3rd of 43 | 88% | 87% | 81% | Cole Valley and Noe Valley (96%) |
| Median household income | $211,174 | 5th of 43 | $148,255 | $149,862 | $93,246 | Cow Hollow ($225,081) |
| Residents in school (6th grade to college) | 7% | Tied 41st of 43 | 15% | 12% | 16% | Lakeshore (24%) |
Fiber reaches 61.9% of homes in Castro-Upper Market, against 69.5% across San Francisco and 66.1% across San Francisco County. Households in Castro-Upper Market are smaller than the US average (2.0 people against 2.7); 43% of workers work from home (US 15%); and the median household income is $211,174 (US $93,246).
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Fiber, 5G, Cable and DSL Internet in Castro-Upper Market
Which Fiber Internet Providers are Available in Castro-Upper Market?
Sonic Fiber in Castro-Upper Market, San Francisco, CA
Availability:
45.4%
Customer Rating:
(14)
Avg. Download Speed
1,000 Mbps
Sonic offers Fiber service to 45.4% of Castro-Upper Market homes. Across the neighborhood, Sonic Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
EarthLink Fiber in Castro-Upper Market, San Francisco, CA
Availability:
39.8%
Customer Rating:
(6)
Avg. Download Speed
4,793 Mbps
EarthLink offers Fiber service to 39.8% of Castro-Upper Market homes. Across the neighborhood, EarthLink Fiber has speeds up to 4,793 Mbps, with speeds from 1,000 Mpbs up to 5,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for EarthLink Fiber. EarthLink Fiber is rated about the same as other types of internet service available in Castro-Upper Market from EarthLink in terms of customer satisfaction.
AT&T Fiber in Castro-Upper Market, San Francisco, CA
Availability:
39.8%
Customer Rating:
(542)
Avg. Download Speed
4,793 Mbps
AT&T offers Fiber service to 39.8% of Castro-Upper Market homes. Across the neighborhood, AT&T Fiber has speeds up to 4,793 Mbps, with speeds from 1,000 Mpbs up to 5,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for AT&T Fiber. AT&T Fiber is rated lower than other types of internet service available in Castro-Upper Market from AT&T in terms of customer satisfaction.
Which Fixed Wireless and LTE Internet Providers are Available in Castro-Upper Market?
Unwired Fixed Wireless in Castro-Upper Market, San Francisco, CA
Availability:
100.0%
Customer Rating:
(1)
Avg. Download Speed
300 Mbps
Unwired offers Fixed Wireless service to 100.0% of Castro-Upper Market homes. Across the neighborhood, Unwired Fixed Wireless is the only type of service available from the company, with speeds up to 300 Mbps
Verizon Fixed Wireless in Castro-Upper Market, San Francisco, CA
Availability:
97.7%
Customer Rating:
(362)
Avg. Download Speed
562 Mbps
Verizon offers Fixed Wireless service to 97.7% of Castro-Upper Market homes. Across the neighborhood, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 562 Mbps, with speeds from 25 Mpbs up to 1,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 6.0 and as high as 75, with an average of 43 Mbps throughout the neighborhood.
T-Mobile Home Internet Fixed Wireless in Castro-Upper Market, San Francisco, CA
Availability:
93.6%
Customer Rating:
(342)
Avg. Download Speed
59 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 93.6% of Castro-Upper Market homes. Across the neighborhood, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 59 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 11 Mbps throughout the neighborhood.
Etheric Networks Fixed Wireless in Castro-Upper Market, San Francisco, CA
Availability:
91.2%
Customer Rating:
(0)
Avg. Download Speed
250 Mbps
Etheric Networks offers Fixed Wireless service to 91.2% of Castro-Upper Market homes. Across the neighborhood, Etheric Networks Fixed Wireless is the only type of service available from the company, with speeds up to 250 Mbps
GeoLinks Fixed Wireless in Castro-Upper Market, San Francisco, CA
Availability:
74.0%
Customer Rating:
(0)
Avg. Download Speed
993 Mbps
GeoLinks offers Fixed Wireless service to 74.0% of Castro-Upper Market homes. Across the neighborhood, GeoLinks Fixed Wireless is the only type of service available from the company, with speeds up to 993 Mbps, with speeds from 200 Mpbs up to 1,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for GeoLinks Fixed Wireless.
EarthLink Fixed Wireless in Castro-Upper Market, San Francisco, CA
Availability:
70.2%
Customer Rating:
(4)
Avg. Download Speed
35 Mbps
EarthLink offers Fixed Wireless service to 70.2% of Castro-Upper Market homes. Across the neighborhood, EarthLink Fixed Wireless has speeds up to 35 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 5.2 Mbps throughout the neighborhood.
AT&T Fixed Wireless in Castro-Upper Market, San Francisco, CA
Availability:
70.2%
Customer Rating:
(205)
Avg. Download Speed
35 Mbps
AT&T offers Fixed Wireless service to 70.2% of Castro-Upper Market homes. Across the neighborhood, AT&T Fixed Wireless has speeds up to 35 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 5.2 Mbps throughout the neighborhood.
Google Fiber Fixed Wireless in Castro-Upper Market, San Francisco, CA
Availability:
1.8%
Customer Rating:
(0)
Avg. Download Speed
1,000 Mbps
Google Fiber offers Fixed Wireless service to 1.8% of Castro-Upper Market homes. Across the neighborhood, Google Fiber Fixed Wireless is the only type of service available from the company, with speeds up to 1,000 Mbps
Which Cable Internet Providers are Available in Castro-Upper Market?
XFINITY Cable in Castro-Upper Market, San Francisco, CA
Availability:
100.0%
Customer Rating:
(2077)
Avg. Download Speed
1,719 Mbps
XFINITY from Comcast offers Cable service to 100.0% of Castro-Upper Market homes. Across the neighborhood, XFINITY Cable is the only type of service available from the company, with speeds up to 1,719 Mbps, with speeds from 1,200 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 35 and as high as 250, with an average of 174 Mbps throughout the neighborhood.
Astound Broadband Cable in Castro-Upper Market, San Francisco, CA
Availability:
94.6%
Customer Rating:
(97)
Avg. Download Speed
1,500 Mbps
Astound Broadband offers Cable service to 94.6% of Castro-Upper Market homes. Across the neighborhood, Astound Broadband Cable is the only type of service available from the company, with speeds up to 1,500 Mbps
Which DSL Internet Providers are Available in Castro-Upper Market?
EarthLink DSL in Castro-Upper Market, San Francisco, CA
Availability:
98.8%
Customer Rating:
(5)
Avg. Download Speed
57 Mbps
EarthLink offers DSL service to 98.8% of Castro-Upper Market homes. Across the neighborhood, EarthLink DSL has speeds up to 57 Mbps, with speeds from 10 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 20, with an average of 12 Mbps throughout the neighborhood. EarthLink DSL is rated higher than other types of internet service available in Castro-Upper Market from EarthLink in terms of customer satisfaction.
AT&T DSL in Castro-Upper Market, San Francisco, CA
Availability:
98.8%
Customer Rating:
(304)
Avg. Download Speed
57 Mbps
AT&T offers DSL service to 98.8% of Castro-Upper Market homes. Across the neighborhood, AT&T DSL has speeds up to 57 Mbps, with speeds from 10 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 20, with an average of 12 Mbps throughout the neighborhood. AT&T DSL is rated about the same as other types of internet service available in Castro-Upper Market from AT&T in terms of customer satisfaction.
How Castro-Upper Market Compares to Its Neighbors
The 10 neighborhoods nearest to Castro-Upper Market that have their own pages are all within 2 miles. Among them, Glen Park has the most homes with fiber (94.9%) and Cole Valley the fewest (16.0%); Castro-Upper Market has 61.9%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Castro-Upper Market (this page) | 14,406 | 61.9% | 3,018 Mbps | 11.2 | B+ | 77/100 |
| Western Addition | 59,637 | 20.5% | 2,649 Mbps | 9.9 | B | 66/100 |
| Mission | 42,754 | 88.0% | 2,487 Mbps | 11.4 | A- | 77/100 |
| Noe Valley | 22,017 | 91.5% | 3,885 Mbps | 12.1 | A- | 80/100 |
| Haight-Ashbury | 16,234 | 26.6% | 2,514 Mbps | 9.5 | B | 75/100 |
| Liberty Street Historic District | 10,367 | 72.2% | 2,047 Mbps | 11 | B+ | 76/100 |
| Cole Valley | 9,799 | 16.0% | 2,032 Mbps | 9.2 | B- | 79/100 |
| Duboce Triangle | 9,117 | 39.5% | 2,455 Mbps | 10.5 | B | 77/100 |
| Glen Park | 8,492 | 94.9% | 3,377 Mbps | 10.8 | A- | 86/100 |
| Twin Peaks | 6,848 | 26.9% | 2,536 Mbps | 9.3 | B | 62/100 |
| Diamond Heights | 3,211 | 33.0% | 2,713 Mbps | 9.2 | B | 68/100 |
Who is the Fastest Internet Provider in Castro-Upper Market?
According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by Sonic. On the other hand, based on data provided by the internet providers to the FCC, AT&T and EarthLink should have faster speeds at a local level. While we typically put more weight on real-world customer ratings, we display both satisfaction and technical maximum information for customers to decide for themselves.
Data Reported to FCC by ISPs: Average Maximum Available in Castro-Upper Market
| AT&T | 5,000 |
|---|---|
| EarthLink | 5,000 |
| XFINITY from Comcast | 2,000 |
| Astound Broadband | 1,500 |
| Verizon | 1,000 |
| GeoLinks | 1,000 |
| Sonic | 1,000 |
| Google Fiber | 1,000 |
| Unwired | 300 |
| Etheric Networks | 250 |
| Viasat | 100 |
| T-Mobile Home Internet | 100 |
| HughesNet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Castro-Upper Market. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Castro-Upper Market Internet Providers
Based on 430 reviews from California internet customers, Sonic is the best internet service provider for Castro-Upper Market residents. Sonic was rated at an average of 4.43 out of 5 in our report for overall customer satisfaction. T-Mobile Home Internet wins for second-place in California, with 4.11 out of 5 stars and 93.6% coverage in Castro-Upper Market.
At a national level, based on 4845 national reviews for any of the providers listed above, Sonic is rated higher than any other provider, with a rating of 4.43 out of 5.
Local, State, and National Ratings for all Castro-Upper Market Internet Providers
The table below shows average customer ratings from customers in Castro-Upper Market, California, and customers throughout the country.
| ISP / Tech Type | Castro-Upper Market Overall | California Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Sonic | (0) | (14) | (14) | View Plans | ||
| T-Mobile Home Internet | (0) | (27) | (342) | View Plans | ||
| GFiber | (0) | (11) | (105) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| HughesNet | (0) | (1) |  (25) | View Plans | ||
| Viasat | (0) | (1) |  (12) | View Plans | ||
| XFINITY |  (1) | (211) | (2379) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| Astound Broadband | (0) | (17) | (122) | View Plans | ||
| Unwired | (0) | (1) | (1) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| Etheric Networks | (0) | (0) | (0) | View Plans | ||
| GeoLinks | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in Castro-Upper Market
Based on data reported by Castro-Upper Market ISPs to the FCC, the fastest speeds in the neighborhood are available through AT&T and EarthLink. These internet providers offer speeds up to 5,000 Mbps in Castro-Upper Market. Therefore, the average customer can get up to 1,949 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
However, actual customers rated their satisfaction with internet speed highest with Sonic. This indicates Sonic reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Castro-Upper Market Speed | California Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Sonic | (0) | (14) | (14) | View Plans | ||
| GFiber | (0) | (11) | (105) | View Plans | ||
| T-Mobile Home Internet | (0) | (27) | (342) | View Plans | ||
| XFINITY | (1) | (211) | (2379) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| Astound Broadband | (0) | (17) | (122) | View Plans | ||
| HughesNet | (0) | (1) | (25) | View Plans | ||
| Unwired | (0) | (1) | (1) | View Plans | ||
| Viasat | (0) | (1) | (12) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| Etheric Networks | (0) | (0) | (0) | View Plans | ||
| GeoLinks | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in Castro-Upper Market?
Of the providers in Castro-Upper Market, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Castro-Upper Market where enough of them have reviewed a provider, otherwise across California or the country. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
T-Mobile Home Internet is rated 4.26 out of 5 for price, which is higher than the average across all internet providers in the country. Sonic is rated second for affordability, with an average price rating of 4.14 out of 5.
The table below shows how customers in Castro-Upper Market, California, and the United States rated the affordability of their internet service.
Rated Affordability in Castro-Upper Market
| ISP / Tech Type | Castro-Upper Market Affordability | California Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (27) | (342) | View Plans | ||
| Sonic | (0) | (14) | (14) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| HughesNet | (0) | (1) | (25) | View Plans | ||
| Viasat | (0) | (1) | (12) | View Plans | ||
| GFiber | (0) | (11) | (105) | View Plans | ||
| Unwired | (0) | (1) | (1) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| Astound Broadband | (0) | (17) | (122) | View Plans | ||
| XFINITY | (1) | (211) | (2379) | View Plans | ||
| Etheric Networks | (0) | (0) | (0) | View Plans | ||
| GeoLinks | (0) | (0) | (0) | View Plans |
Customer Reviews for Internet Service Providers in California
Customer Reviews
Steve
ting Fiber
November 13, 2026 Slow, 1/10th the speed they advertised
Robert
Verizon Fixed Wireless
November 10, 2026 Was cut off with .out notice due to upgrade and was not provided connection to upgrade from the same location (tower). Causing further problems in service and added cost.
ISPReports User
AT&T DSL
November 08, 2026 Lousy
ISPReports User
Fidium
November 08, 2026 Vernice
Frontier Fiber
November 01, 2026 Horrible this is horrible. My internet has been down for two days in a half. Never again
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Which ISP Should You Choose in Castro-Upper Market?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The best all-around internet service provider in Castro-Upper Market is Sonic.
- The fastest internet provider should be AT&T and EarthLink. Considering speed for the money and reliability in speeds, Sonic may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Castro-Upper Market is T-Mobile Home Internet.
- XFINITY from Comcast, Viasat, Unwired, HughesNet, EarthLink, and AT&T has the broadest coverage in Castro-Upper Market, available to 100.0% of homes, and is most likely to cover your home. To find out exactly what’s available at your home, please use our address search tool.