8 Best Internet Providers in Sister Bay, WI
Find internet availability by address in Sister Bay, WI
Jump to: Best Internet Provider | Availability Maps | Customer Reviews | Sister Bay ISP Report Card | Business Internet in Sister Bay
| Sister Bay ISP Report Card | C | |
| Download Speed for Most Households | 812 Mbps | |
| Number of Internet Service Providers | 8 | |
| Real Sister Bay Customer Ratings | 1 |
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
Sister Bay has 8 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Cable, Fiber, Fixed Wireless, and DSL internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Sister Bay.
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Sister Bay has 8 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Cable, Fiber, Fixed Wireless, and DSL internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Sister Bay.
Compare Providers Ranked by Coverage, Speed, and Customer Ratings
Frontier
Connection
Customer Rating
DSL
Spectrum
Connection
Customer Rating
Fiber
Cable
Bertram Internet
Connection
Customer Rating
Fiber
Fixed Wireless
EarthLink
Connection
Customer Rating
Fixed Wireless
Above are the top 4 providers in Sister Bay, WI for most people based on high speed internet coverage, speeds, and customer reviews. Click below to see all providers in your city.
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 Sister Bay ratings may vary and are shown below.
Who is the Best Internet Provider in Sister Bay, WI?
T-Mobile Home Internet is the best internet provider in Sister Bay based on Wisconsin customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, T-Mobile Home Internet had the best reviews at the local, state, and national levels versus all available providers in Sister Bay, making it a solid recommendation among providers with reviews. T-Mobile Home Internet is an option for 92.39% of the city.
Click here to get T-Mobile Home Internet
or call 1-833-601-2935
The chart and table below show average customer ratings from customers in Sister Bay, Wisconsin, and customers throughout the country.
Top Rated Internet Providers in Sister Bay
Local, State, and National Ratings for all Sister Bay Internet Providers
| ISP / Tech Type | Sister Bay Overall | Wisconsin Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Spectrum | (1) | (94) | (1738) | View Plans | ||
| T-Mobile Home Internet | (0) | (2) | (284) | View Plans | ||
| Nsight Telservices | (0) | (7) | (7) | View Plans | ||
| EarthLink | (0) | (1) | (12) | View Plans | ||
| AT&T | (0) | (24) | (924) | View Plans | ||
| US Cellular | (0) | (1) | (15) | View Plans | ||
| Frontier | (0) | (4) | (143) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Bertram Internet | (0) | (0) | (1) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans |
Based on 134 reviews from Wisconsin internet customers, T-Mobile Home Internet is the best internet service provider for Sister Bay residents. T-Mobile Home Internet was rated at an average of 4.50 out of 5 in our report for overall customer satisfaction. Nsight Telservices wins for second-place in Wisconsin, with 4.14 out of 5 stars and 100.0% coverage in Sister Bay.
At a national level, based on 3153 national reviews for any of the providers listed above, Nsight Telservices is rated higher than any other provider, with a rating of 4.18 out of 5.
Which Providers are Available at my Home in Sister Bay?
a different provider.

Internet Availability Key
Speeds and coverage vary within the city, and sometimes even from block to block. The map shows speeds per provider and where each provider is available.
Who is the Fastest Internet Provider in Sister Bay?
According to unbiased feedback from real internet customers in the city, they reported being happiest with speeds provided by Nsight Telservices. On the other hand, based on data provided by the internet providers to the FCC, Spectrum 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 Sister Bay
| ISP / Tech Type | Max Advertised Speed | ||
|---|---|---|---|
| Spectrum | 1,000 Mbps | ||
| Bertram Internet | 1,000 Mbps | ||
| Frontier Communications | 115 Mbps | ||
| T-Mobile Home Internet | 100 Mbps | ||
| EarthLink | 100 Mbps | ||
| AT&T | 100 Mbps | ||
| Nsight Telservices | 100 Mbps | ||
| Viasat | 100 Mbps | ||
| HughesNet | 25 Mbps | ||
| US Cellular | 25 Mbps |
Customer Ratings for Internet Provider Speeds in Sister Bay
| ISP / Tech Type | Sister Bay Speed | Wisconsin Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Spectrum | (1) | (94) | (1738) | View Plans | ||
| Nsight Telservices | (0) | (7) | (7) | View Plans | ||
| EarthLink | (0) | (1) | (12) | View Plans | ||
| T-Mobile Home Internet | (0) | (2) | (284) | View Plans | ||
| AT&T | (0) | (24) | (924) | View Plans | ||
| Frontier | (0) | (4) | (143) | View Plans | ||
| US Cellular | (0) | (1) | (15) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Bertram Internet | (0) | (0) | (1) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans |
Based on data reported by Sister Bay ISPs to the FCC, the fastest speeds in the city are available through Spectrum. The company offers speeds up to 1,000 Mbps in Sister Bay. Therefore, the average customer can get up to 1,000 Mbps if they're willing to purchase the fastest subscription tier available at their homes.
Additionally, actual customers in the city rated their satisfaction with internet speed highest with Nsight Telservices. This indicates Nsight Telservices reliably delivers speeds expected by the customer based on the plan they are paying for.
Who is the Cheapest Internet Provider in Sister Bay?
Wisconsin customers rate Nsight Telservices as the cheapest internet service provider in state. Data comes from customers in the state rating their satisfaction with pricing. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
Nsight Telservices received a local rating of 4.57 out of 5, which is higher than the average across all internet providers in the country. T-Mobile Home Internet is rated in second place for affordability by the company’s Sister Bay customers with an average price rating of 4.50 out of 5.
The chart and graph below show how customers in Sister Bay, Wisconsin, and the United States rated the affordability of their internet service.
Rated Affordability in Sister Bay
| ISP / Tech Type | Sister Bay Affordability | Wisconsin Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| Spectrum | (1) | (94) | (1738) | View Plans | ||
| Nsight Telservices | (0) | (7) | (7) | View Plans | ||
| T-Mobile Home Internet | (0) | (2) | (284) | View Plans | ||
| AT&T | (0) | (24) | (924) | View Plans | ||
| US Cellular | (0) | (1) | (15) | View Plans | ||
| EarthLink | (0) | (1) | (12) | View Plans | ||
| Frontier | (0) | (4) | (143) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Bertram Internet | (0) | (0) | (1) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans |
Sister Bay Internet Health Assessment
ISP Reports evaluates the technological infrastructure across the United States. This includes assessing a grade for ISP providers and infrastructure in the city and setting an index number for the digital connectivity of its residents. You can view the ISP Report Card and the Digital Connectivity Index for Sister Bay below, including the metrics used and how Sister Bay compares to the rest of Wisconsin and nation.
| Metric
(hover for details)
|
Sister Bay | Wisconsin | USA | ||
|---|---|---|---|---|---|
| Fiber Availability Percent The percentage of households in Sister Bay that have a Fiber internet connection available to their home. | 11.78% | 57.90% | 67.25% | ||
| Average Download SpeedThe maximum download speed most households can get on average. This is measured by availability in a block group and weighted by the population in that area. | 812 Mbps | 2,751 Mbps | 3,293 Mbps | ||
| Provider CountThe number of providers available for most people. This is a weighted average by block rather than a total for Sister Bay. | 7.6 | 7.3 | 6.8 |
| Average Household SizeA larger household size in a city indicates that there will be a greater need for bandwidth due to simultaneous usage, multiple devices, and network congestion. | 1.9 | 2.4 | 2.7 | ||
| Work From Home PercentA higher percent of the population working from home indicates bandwidth requirements being more widely needed rather than consolidated to commercial portions of the city. | 17% | 12% | 14% | ||
| Households with DevicesA higher percentage of households with computing devices in the home indicates a higher level of infrastructure needed to support those households. | 95% | 94% | 95% | ||
| Households with InternetA higher percentage of households with internet indicates a higher need for usage and connectivity in people’s daily lives. | 89% | 90% | 90% | ||
| Households with BroadbandA higher percentage of households with a broadband connection (defined as speeds above 25 Mbps) indicates heavier usage needs within these households. | 69% | 73% | 75% | ||
| Broadband Usage vs. AvailabilityThis measures what percentage of households who have a broadband connection to their home actually have an active subscription to that service. | 69% | 74% | 76% |
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Sister Bay ISP Report Card & Digital Connectivity Index
The ISP Report Card in Sister Bay is C, which is comparable to other cities. The local demand for broadband internet connectivity in Sister Bay is high with a score of 51 / 100 in our Digital Connectivity Index. This means that internet service providers operating in Sister Bay have done a average job meeting the needs of its residents.
The Sister Bay ISP Report Card evaluates the city on availability and speed metrics compared to other cities in the United States. ISP Infrastructure can vary greatly and on its own isn’t a perfect measure of what a city needs. Please see our ISP Report Card along with the Digital Connectivity Index above to evaluate how well the connectivity demand is met by the existing infrastructure.
89% of Sister Bay households have an internet connection despite having 100.00% availability. 69% of households have fiber, cable, or DSL, 13% have satellite, 0% are still on dial-up, and 4% of households have internet but don’t pay for a subscription because it’s subsidized by the Affordable Connectivity Program.
As you can see in the table above, while 69% of households have a broadband connection such as fiber, cable or DSL available to their home, 69% subscribe to it. A moderate amount of Sister Bay residents are taking advantage of the available internet infrastructure.
For more details, please visit our ISP Report Card and Digital Connectivity Index pages.
How do Neighboring Cities Compare to Sister Bay?
- ISP Report Card: C-
- Digital Connectivity Index: 54 / 100
- ISP Report Card: D+
- Digital Connectivity Index: 52 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 52 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 54 / 100
- ISP Report Card: C
- Digital Connectivity Index: 52 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 45 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 40 / 100
- ISP Report Card: B
- Digital Connectivity Index: 53 / 100
- ISP Report Card: F
- Digital Connectivity Index: 30 / 100
How Much Speed does a Sister Bay Household Need?
Higher speed is typically preferred, but that comes at a higher price. The average size of a household in Sister Bay is 1.9, which is smaller than the Wisconsin average of 2.4 and smaller than the national average of 2.7. Sister Bay's average household income is $71,876 which is about average for the Wisconsin average of $82,094 and about average for the national average of $90,606. Homes with fewer people living in them and with higher incomes tend to indicate a fairly average device usage pattern.
Sister Bay also has 5% of its population enrolled in school between the 6th grade and college level, this is lower than the Wisconsin average of 15%. Additionally, 17% of residents work from home, which is higher than the 12% of residents in Wisconsin who work from home. This and other factors you can see above show us that the community of Sister Bay has an average need for internet connectivity and speeds.
Compared to the rest of the country, Sister Bay households are more technology-engaged. 95% of households have some sort of computing device, 88% have desktops or laptops in the home, and 91% have smartphones. To see what speeds you are currently getting, please visit our internet speed test tool.
Which Fiber Internet Providers are Available in Sister Bay?
Spectrum Fiber in Sister Bay, WI
Spectrum offers Fiber service to 9.9% of Sister Bay homes. Across the city, Spectrum Fiber has speeds up to 1,000 Mbps
Bertram Internet Fiber in Sister Bay, WI
Bertram Internet offers Fiber service to 1.9% of Sister Bay homes. Across the city, Bertram Internet Fiber has speeds up to 1,000 Mbps
Which Cable Internet Providers are Available in Sister Bay?
Spectrum Cable in Sister Bay, WI
Spectrum offers Cable service to 77.1% of Sister Bay homes. Across the city, Spectrum Cable has speeds up to 1,000 Mbps
Which DSL Internet Providers are Available in Sister Bay?
Frontier DSL in Sister Bay, WI
Frontier Communications offers DSL service to 87.9% of Sister Bay homes. Across the city, Frontier DSL is the only type of service available from the company, with speeds up to 35 Mbps, with speeds from 10 Mpbs up to 115 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 7.0, with an average of 2.3 Mbps throughout the city.
Which Fixed Wireless and LTE Internet Providers are Available in Sister Bay?
US Cellular Fixed Wireless in Sister Bay, WI
US Cellular offers Fixed Wireless service to 100.0% of Sister Bay homes. Across the city, US Cellular Fixed Wireless is the only type of service available from the company, with speeds up to 16 Mbps, with speeds from 10 Mpbs up to 25 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 3.0, with an average of 1.9 Mbps throughout the city.
Nsight Telservices Fixed Wireless in Sister Bay, WI
Nsight Telservices offers Fixed Wireless service to 100.0% of Sister Bay homes. Across the city, Nsight Telservices Fixed Wireless is the only type of service available from the company, with speeds up to 100 Mbps
Bertram Internet Fixed Wireless in Sister Bay, WI
Bertram Internet offers Fixed Wireless service to 97.6% of Sister Bay homes. Across the city, Bertram Internet Fixed Wireless has speeds up to 100 Mbps
EarthLink Fixed Wireless in Sister Bay, WI
EarthLink offers Fixed Wireless service to 96.1% of Sister Bay homes. Across the city, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 37 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 5.8 Mbps throughout the city.
AT&T Fixed Wireless in Sister Bay, WI
AT&T offers Fixed Wireless service to 96.1% of Sister Bay homes. Across the city, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 37 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 5.8 Mbps throughout the city.
T-Mobile Home Internet Fixed Wireless in Sister Bay, WI
T-Mobile Home Internet offers Fixed Wireless service to 92.4% of Sister Bay homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 75 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 14 Mbps throughout the city.
Which ISP Should You Choose in Sister Bay?
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 Sister Bay is T-Mobile Home Internet.
- The fastest internet provider should be Spectrum. Considering speed for the money and reliability in speeds, Nsight Telservices may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Sister Bay is Nsight Telservices.
- Viasat, US Cellular, Nsight Telservices, and HughesNet has the broadest coverage in Sister Bay, and is most likely to cover your home. To find out exactly what's available at your home, please use our address search tool.
How does Sister Bay compare to other cities with a similar population?
To see how Sister Bay stacks up on the national level, it's useful to look at some other cities with similarly sized populations. Below you can see a list of these cities and how they compare to Sister Bay's C ISP Report Card and 51 / 100 Digital Connectivity Index.
- ISP Report Card: C+
- Digital Connectivity Index: 42 / 100
- ISP Report Card: D+
- Digital Connectivity Index: 43 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 24 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 72 / 100
- ISP Report Card: D
- Digital Connectivity Index: 25 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 64 / 100
- ISP Report Card: D
- Digital Connectivity Index: 35 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 48 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 29 / 100
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