7 Best Internet Providers in Custer County, SD
Find internet availability by address in Custer County, SD
Jump to: Best Internet Provider | Availability Maps | Customer Reviews | Custer County ISP Report Card | Business Internet in Custer County
| Custer County ISP Report Card | C+ | |
| Download Speed for Most Households | 1,378 Mbps | |
| Number of Internet Service Providers | 7 | |
| Real Custer County 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.
Custer County has 7 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Fixed Wireless, and DSL internet are available in the county. Reviews are grouped by provider and the type of service they offer, covering all 3 available internet technologies in Custer County.
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Custer County has 7 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Fixed Wireless, and DSL internet are available in the county. Reviews are grouped by provider and the type of service they offer, covering all 3 available internet technologies in Custer County.
Compare Providers Ranked by Coverage, Speed, and Customer Ratings
Golden West Telecommunications
Connection
Customer Rating
Fiber
DSL
Mt. Rushmore Telephone Company
Connection
Customer Rating
Fiber
DSL
Midco
Connection
Customer Rating
Fiber
Range
Connection
Customer Rating
Fiber
Above are the top 4 providers in Custer County, SD for most people based on high speed internet coverage, speeds, and customer reviews. Click below to see all providers in your county.
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 Custer County ratings may vary and are shown below.
Who is the Best Internet Provider in Custer County, SD?
AT&T is the best internet provider in Custer County based on South Dakota customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, AT&T had the best reviews at the local, state, and national levels versus all available providers in Custer County, making it a solid recommendation among providers with reviews. AT&T is an option for 50.43% of the county.
or call 1-877-610-1219
The chart and table below show average customer ratings from customers in Custer County, South Dakota, and customers throughout the country.
Top Rated Internet Providers in Custer County
Local, State, and National Ratings for all Custer County Internet Providers
| ISP / Tech Type | Custer County Overall | South Dakota Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Golden West Telecommunications | (1) | (1) | (1) | View Plans | ||
| AT&T | (0) | (3) | (924) | View Plans | ||
| Midco | (0) | (12) | (31) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (284) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| Range | (0) | (0) | (1) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| Mt. Rushmore Telephone Company | (0) | (0) | (0) | View Plans |
Based on 17 reviews from South Dakota internet customers, AT&T is the best internet service provider for Custer County residents. AT&T was rated at an average of 4.67 out of 5 in our report for overall customer satisfaction. Midco wins for second-place in South Dakota, with 3.50 out of 5 stars and 10.2% coverage in Custer County.
At a national level, based on 1282 national reviews for any of the providers listed above, Golden West Telecommunications is rated higher than any other provider, with a rating of 1.00 out of 5.
Which Providers are Available at my Home in Custer County?
a different provider.

Internet Availability Key
Speeds and coverage vary within the county, 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 Custer County?
According to unbiased feedback from real internet customers in the county, they reported being happiest with speeds provided by AT&T. On the other hand, based on data provided by the internet providers to the FCC, Midco 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 Custer County
| ISP / Tech Type | Max Advertised Speed | ||
|---|---|---|---|
| Midco | 5,000 Mbps | ||
| Range | 1,000 Mbps | ||
| Mt. Rushmore Telephone Company | 1,000 Mbps | ||
| Golden West Telecommunications | 1,000 Mbps | ||
| AT&T | 100 Mbps | ||
| EarthLink | 100 Mbps | ||
| T-Mobile Home Internet | 100 Mbps | ||
| Viasat | 100 Mbps | ||
| HughesNet | 25 Mbps |
Customer Ratings for Internet Provider Speeds in Custer County
| ISP / Tech Type | Custer County Speed | South Dakota Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Golden West Telecommunications | (1) | (1) | (1) | View Plans | ||
| AT&T | (0) | (3) | (924) | View Plans | ||
| Midco | (0) | (12) | (31) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (284) | View Plans | ||
| Range | (0) | (0) | (1) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| Mt. Rushmore Telephone Company | (0) | (0) | (0) | View Plans |
Based on data reported by Custer County ISPs to the FCC, the fastest speeds in the county are available through Midco. The company offers speeds up to 5,000 Mbps in Custer County. Therefore, the average customer can get up to 5,000 Mbps if they're willing to purchase the fastest subscription tier available at their homes.
Additionally, actual customers in the county rated their satisfaction with internet speed highest with AT&T. This indicates AT&T reliably delivers speeds expected by the customer based on the plan they are paying for.
Who is the Cheapest Internet Provider in Custer County?
South Dakota customers rate AT&T 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.
AT&T received a local rating of 4.00 out of 5, which is lower than the average across all internet providers in the country. Midco is rated in second place for affordability by the company’s Custer County customers with an average price rating of 2.83 out of 5.
The chart and graph below show how customers in Custer County, South Dakota, and the United States rated the affordability of their internet service.
Rated Affordability in Custer County
| ISP / Tech Type | Custer County Affordability | South Dakota Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| Golden West Telecommunications | (1) | (1) | (1) | View Plans | ||
| AT&T | (0) | (3) | (924) | View Plans | ||
| Midco | (0) | (12) | (31) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (284) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| Range | (0) | (0) | (1) | View Plans | ||
| Mt. Rushmore Telephone Company | (0) | (0) | (0) | View Plans |
Custer County 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 county 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 Custer County below, including the metrics used and how Custer County compares to the rest of South Dakota and nation.
| Metric
(hover for details)
|
Custer County | South Dakota | USA | ||
|---|---|---|---|---|---|
| Fiber Availability Percent The percentage of households in Custer County that have a Fiber internet connection available to their home. | 96.45% | 60.99% | 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. | 1,378 Mbps | 1,953 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 Custer County. | 3.2 | 5.3 | 6.8 |
| Average Household SizeA larger household size in a county indicates that there will be a greater need for bandwidth due to simultaneous usage, multiple devices, and network congestion. | 2.1 | 2.5 | 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. | 12% | 10% | 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. | 94% | 94% | 95% | ||
| Households with InternetA higher percentage of households with internet indicates a higher need for usage and connectivity in people’s daily lives. | 86% | 89% | 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. | 67% | 75% | 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. | 68% | 76% | 76% |
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Custer County ISP Report Card & Digital Connectivity Index
The ISP Report Card in Custer County is C+, which is comparable to other counties. The local demand for broadband internet connectivity in Custer County is high with a score of 46 / 100 in our Digital Connectivity Index. This means that internet service providers operating in Custer County have done a average job meeting the needs of its residents.
The Custer County ISP Report Card evaluates the county on availability and speed metrics compared to other counties in the United States. ISP Infrastructure can vary greatly and on its own isn’t a perfect measure of what a county 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.
86% of Custer County households have an internet connection despite having 99.53% availability. 67% of households have fiber, cable, or DSL, 8% have satellite, 0% are still on dial-up, and 1% 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 67% of households have a broadband connection such as fiber, cable or DSL available to their home, 68% subscribe to it. A moderate amount of Custer County 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 Counties Compare to Custer County?
- ISP Report Card: D+
- Digital Connectivity Index: 46 / 100
- ISP Report Card: C
- Digital Connectivity Index: 60 / 100
- ISP Report Card: C
- Digital Connectivity Index: 54 / 100
- ISP Report Card: C
- Digital Connectivity Index: 51 / 100
- ISP Report Card: C
- Digital Connectivity Index: 45 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 46 / 100
- ISP Report Card: C
- Digital Connectivity Index: 71 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 56 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 59 / 100
How Much Speed does a Custer County Household Need?
Higher speed is typically preferred, but that comes at a higher price. The average size of a household in Custer County is 2.1, which is smaller than the South Dakota average of 2.5 and smaller than the national average of 2.7. Custer County's average household income is $80,718 which is higher than the South Dakota average of $76,929 and higher than 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.
Custer County also has 7% of its population enrolled in school between the 6th grade and college level, this is lower than the South Dakota average of 15%. Additionally, 12% of residents work from home, which is higher than the 10% of residents in South Dakota who work from home. This and other factors you can see above show us that the community of Custer County has an average need for internet connectivity and speeds.
Compared to the rest of the country, Custer County households are about average when it comes to technological engagement. 94% of households have some sort of computing device, 84% have desktops or laptops in the home, and 89% have smartphones. To see what speeds you are currently getting, please visit our internet speed test tool.
Which Fiber Internet Providers are Available in Custer County?
Golden West Telecommunications Fiber in Custer County, SD
Golden West Telecommunications offers Fiber service to 70.0% of Custer County homes. Across the county, Golden West Telecommunications Fiber has speeds up to 1,000 Mbps
Mt. Rushmore Telephone Company Fiber in Custer County, SD
Mt. Rushmore Telephone Company offers Fiber service to 22.2% of Custer County homes. Across the county, Mt. Rushmore Telephone Company Fiber has speeds up to 1,000 Mbps
Midco Fiber in Custer County, SD
Midco offers Fiber service to 10.1% of Custer County homes. Across the county, Midco Fiber is the only type of service available from the company, with speeds up to 5,000 Mbps
Range Fiber in Custer County, SD
Range offers Fiber service to 2.9% of Custer County homes. Across the county, Range Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
Which Cable Internet Providers are Available in Custer County?
According to the most recently submitted data by internet service providers to the FCC, there are currently no cable providers available in Custer County, SD.
Which DSL Internet Providers are Available in Custer County?
Golden West Telecommunications DSL in Custer County, SD
Golden West Telecommunications offers DSL service to 19.7% of Custer County homes. Across the county, Golden West Telecommunications DSL has speeds up to 21 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 2.4 Mbps throughout the county. Golden West Telecommunications DSL is rated the same as other types of internet service available in Custer County from Golden West Telecommunications in terms of customer satisfaction.
Mt. Rushmore Telephone Company DSL in Custer County, SD
Mt. Rushmore Telephone Company offers DSL service to 13.7% of Custer County homes. Across the county, Mt. Rushmore Telephone Company DSL has speeds up to 29 Mbps, with speeds from 10 Mpbs up to 50 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 5.0, with an average of 3.0 Mbps throughout the county.
Which Fixed Wireless and LTE Internet Providers are Available in Custer County?
T-Mobile Home Internet Fixed Wireless in Custer County, SD
T-Mobile Home Internet offers Fixed Wireless service to 74.4% of Custer County homes. Across the county, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 51 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 8.8 Mbps throughout the county.
EarthLink Fixed Wireless in Custer County, SD
EarthLink offers Fixed Wireless service to 50.4% of Custer County homes. Across the county, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 63 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 12 Mbps throughout the county.
AT&T Fixed Wireless in Custer County, SD
AT&T offers Fixed Wireless service to 50.4% of Custer County homes. Across the county, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 63 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 12 Mbps throughout the county.
Which ISP Should You Choose in Custer County?
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 Custer County is AT&T.
- The fastest internet provider should be Midco. Considering speed for the money and reliability in speeds, AT&T may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Custer County is AT&T.
- HughesNet, Viasat, and T-Mobile Home Internet has the broadest coverage in Custer County, 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 Custer County compare to other cities with a similar population?
To see how Custer County 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 Custer County's C+ ISP Report Card and 46 / 100 Digital Connectivity Index.
- ISP Report Card: D
- Digital Connectivity Index: 14 / 100
- ISP Report Card: C
- Digital Connectivity Index: 36 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 58 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 19 / 100
- ISP Report Card: C
- Digital Connectivity Index: 33 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 30 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 31 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 48 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 43 / 100
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