Best Internet Providers in Grantsburg, IN
All 4 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Grantsburg, IN
Grantsburg has 4 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Cable, Fiber, DSL, and Fixed Wireless 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 Grantsburg.
Ranks compare Grantsburg with the 31,388 US places under 1,000 people, the tiers of our fastest-cities rankings.
The Best Internet in Grantsburg, IN at a Glance
Grantsburg Internet Providers, Ranked by Coverage, Speed and Customer Ratings
Frontier
Connection
Customer Rating
DSL
Mainstream Fiber Networks
Connection
Customer Rating
Fiber
Sparklight
Connection
Customer Rating
Cable
T-Mobile Home Internet
Connection
Customer Rating
Fixed Wireless
Providers with less than 1% coverage in this city 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 Grantsburg ratings may vary and are shown below.
Who is the Best Internet Provider in Grantsburg, IN?
Mainstream Fiber Networks is the highest-rated internet provider in Grantsburg based on 18 Indiana customer reviews, and T-Mobile Home Internet has the highest rating nationwide. The provider information above and the information immediately below can help you decide. Compare provider ratings and review counts above.
Which Providers are Available at my Home in Grantsburg?
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 Grantsburg
How Grantsburg Compares to Places Its Size
Grantsburg's report card score is in the bottom 29% and its connectivity index is in the bottom 13%.
| Measure | Grantsburg | Rank among US places under 1,000 people | Crawford County | Indiana | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 62.8% | bottom 46% | 72.4% | 76.3% | 71.5% | 6,946 places at 100.0% |
| Average top speed | 697 Mbps | bottom 26% | 855 Mbps | 3,867 Mbps | 3,486 Mbps | Fairmount, TN and Falling Water, TN and 5 more (25,000 Mbps) |
| Providers at a typical address | 3 | bottom 31% | 4.7 | 7.6 | 7.1 | Los Prados, PR (15.1) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.4 | bottom 49% | 2.3 | 2.5 | 2.7 | Paguate, NM (13.4) |
| Workers who work from home | 8% | bottom 48% | 8% | 11% | 15% | Boys Town, NE (100%) |
| Homes with a computer, tablet or phone | 89% | bottom 29% | 90% | 95% | 96% | 1,494 places at 100% |
| Homes with internet | 78% | bottom 21% | 75% | 90% | 91% | 370 places at 100% |
| Homes on fiber, cable or DSL | 36% | bottom 15% | 39% | 72% | 76% | 23 places at 100% |
| More about the households here | ||||||
| Homes with a desktop or laptop | 53% | bottom 10% | 59% | 77% | 81% | 72 places at 100% |
| Median household income | $40,631 | bottom 6% | $50,783 | $81,120 | $93,246 | 22 places at $250,001 |
| Residents in school (6th grade to college) | 12% | top 44% | 13% | 16% | 16% | University at Buffalo, NY (100%) |
Fiber reaches 62.8% of homes in Grantsburg, against 72.4% across Crawford County and 76.3% across Indiana. Households in Grantsburg are smaller than the US average (2.4 people against 2.7); 8% of workers work from home (US 15%); and the median household income is $40,631 (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 Grantsburg
Which Fiber Internet Providers are Available in Grantsburg?
Mainstream Fiber Networks Fiber in Grantsburg, IN
Availability:
62.8%
Customer Rating:
(2)
Avg. Download Speed
1,000 Mbps
Mainstream Fiber Networks offers Fiber service to 62.8% of Grantsburg homes. Across the city, Mainstream Fiber Networks Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in Grantsburg?
T-Mobile Home Internet Fixed Wireless in Grantsburg, IN
Availability:
82.9%
Customer Rating:
(342)
Avg. Download Speed
33 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 82.9% of Grantsburg homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 33 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 4.8 Mbps throughout the city.
Which Cable Internet Providers are Available in Grantsburg?
Sparklight Cable in Grantsburg, IN
Availability:
42.2%
Customer Rating:
(58)
Avg. Download Speed
1,000 Mbps
Sparklight offers Cable service to 42.2% of Grantsburg homes. Across the city, Sparklight Cable is the only type of service available from the company, with speeds up to 1,000 Mbps
Which DSL Internet Providers are Available in Grantsburg?
Frontier DSL in Grantsburg, IN
Availability:
92.5%
Customer Rating:
(58)
Avg. Download Speed
69 Mbps
Frontier Communications offers DSL service to 92.5% of Grantsburg homes. Across the city, Frontier DSL is the only type of service available from the company, with speeds up to 69 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 4.3 Mbps throughout the city.
Internet in Grantsburg by Neighborhood and ZIP Code
Grantsburg has 1 ZIP code with its own page. Each row links to that place’s page.
Neighborhoods in Grantsburg
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
ZIP codes in Grantsburg
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 47123 | 180 | 77.8% | 857 Mbps | 3.2 | C- | 22/100 |
How Grantsburg Compares to Nearby Places
The 10 places nearest to Grantsburg that have their own pages are all within 8 miles. Among them, English has the most homes with fiber (73.2%) and Leavenworth the fewest (55.1%); Grantsburg has 62.8%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Grantsburg (this page) | 199 | 62.8% | 697 Mbps | 3 | D+ | 21/100 |
| English | 2,347 | 73.2% | 772 Mbps | 3.5 | D+ | 21/100 |
| Leavenworth | 1,247 | 55.1% | 610 Mbps | 4.5 | C- | 20/100 |
| Taswell | 874 | 55.8% | 711 Mbps | 4.8 | C- | 27/100 |
| Pilot Knob | 347 | 87.9% | 915 Mbps | 6.4 | C+ | 12/100 |
| Temple | 267 | 68.9% | 720 Mbps | 3.3 | D+ | 22/100 |
| Doolittle Mills | 252 | 61.5% | 663 Mbps | 2.7 | D+ | 37/100 |
| Sulphur | 173 | 0.0% | 109 Mbps | 2.7 | F | 29/100 |
| Curby | 105 | 91.4% | 1,000 Mbps | 7 | B- | 24/100 |
| Riddle | 91 | 100.0% | 1,000 Mbps | 6 | B | 29/100 |
| Mifflin | 31 | 0.0% | 300 Mbps | 4 | D- | 11/100 |
Who is the Fastest Internet Provider in Grantsburg?
According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by Mainstream Fiber Networks. On the other hand, based on data provided by the internet providers to the FCC, Mainstream Fiber Networks and Sparklight 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 Grantsburg
| Mainstream Fiber Networks | 1,000 |
|---|---|
| Sparklight | 1,000 |
| Frontier Communications | 115 |
| 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 Grantsburg. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Grantsburg Internet Providers
Based on 18 reviews from Indiana internet customers, Mainstream Fiber Networks is the best internet service provider for Grantsburg residents. Mainstream Fiber Networks was rated at an average of 5.00 out of 5 in our report for overall customer satisfaction. T-Mobile Home Internet wins for second-place in Indiana, with 3.71 out of 5 stars and 82.9% coverage in Grantsburg.
At a national level, based on 603 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.02 out of 5.
Local, State, and National Ratings for all Grantsburg Internet Providers
The table below shows average customer ratings from customers in Grantsburg, Indiana, and customers throughout the country.
| ISP / Tech Type | Grantsburg Overall | Indiana Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Mainstream Fiber Networks |  (0) |  (1) | (2) | View Plans | ||
| T-Mobile Home Internet | (0) | (7) | (342) | View Plans | ||
| HughesNet | (0) | (2) | (25) | View Plans | ||
| Frontier | (0) | (10) | (177) | View Plans | ||
| Sparklight | (0) | (0) | (82) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans |
Customer Ratings for Internet Provider Speeds in Grantsburg
Based on data reported by Grantsburg ISPs to the FCC, the fastest speeds in the city are available through Mainstream Fiber Networks and Sparklight. These internet providers offer speeds up to 1,000 Mbps in Grantsburg. 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 rated their satisfaction with internet speed highest with Mainstream Fiber Networks. This indicates Mainstream Fiber Networks reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Grantsburg Speed | Indiana Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Mainstream Fiber Networks | (0) | (1) | (2) | View Plans | ||
| T-Mobile Home Internet | (0) | (7) | (342) | View Plans | ||
| HughesNet | (0) | (2) | (25) | View Plans | ||
| Frontier | (0) | (10) | (177) | View Plans | ||
| Sparklight | (0) | (0) | (82) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans |
Who is the Cheapest Internet Provider in Grantsburg?
Of the providers in Grantsburg, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Grantsburg where enough of them have reviewed a provider, otherwise across Indiana 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 3.71 out of 5 for price, which is similar to the average across all internet providers in the country. Mainstream Fiber Networks is rated second for affordability, with an average price rating of 4.00 out of 5.
The table below shows how customers in Grantsburg, Indiana, and the United States rated the affordability of their internet service.
Rated Affordability in Grantsburg
| ISP / Tech Type | Grantsburg Affordability | Indiana Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (7) | (342) | View Plans | ||
| Mainstream Fiber Networks | (0) | (1) | (2) | View Plans | ||
| HughesNet | (0) | (2) | (25) | View Plans | ||
| Frontier | (0) | (10) | (177) | View Plans | ||
| Sparklight | (0) | (0) | (82) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans |
Customer Reviews for Internet Service Providers in Indiana
Customer Reviews
ISPReports User
Frontier Fiber
October 08, 2026 When it works, it is good, but there is no real customer service. The site says you can call till 9 PM ET, but when you try, it tells you they are closed. The chatbot sucks and never knows what you are talking about. Their app works like it was made by a first-year high school student. The people chatting have to translate to whatever language they speak, so it is slow and not always in the right order; it is like talking to Yoda half the time. This is one of the worst places to deal with or get help when it is needed.
Jjames A
Kosciusko Connect Fiber
October 04, 2026 Service excellent Number of units using is up to 13. Watches, 4 computers, 3 iPads, 4 cell phones and two tvs
phyllis t
Surf Fiber
September 30, 2026 great
Sam F
Spectrum Cable
July 31, 2026 Service is pretty good but moving service is a headache. Not suggested for anyone planning to move whether near or far future.
Tim
Surf Fiber
July 27, 2026 have had surf since late December of 2024 and there awesome my speeds up and down always run above 250 and i have no complaints and have had very few outages over the course of time maybe t or three tops so i understated all ISP can have an outage from time to time this should be anticipated and is not a serious ding
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Which ISP Should You Choose in Grantsburg?
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 Grantsburg is Mainstream Fiber Networks.
- The fastest internet provider should be Mainstream Fiber Networks and Sparklight. Considering speed for the money and reliability in speeds, Mainstream Fiber Networks may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Grantsburg is T-Mobile Home Internet.
- Viasat, HughesNet, and Frontier Communications has the broadest coverage in Grantsburg, available to 92.5% 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.