Best Internet Providers in Marlborough, CT
All 6 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Marlborough, CT
Marlborough has 6 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, 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 Marlborough.
Ranks compare Marlborough with the 15,682 US towns of 1,000 to 9,999 people, the tiers of our fastest-cities rankings.
The Best Internet in Marlborough, CT at a Glance
Marlborough Internet Providers, Ranked by Coverage, Speed and Customer Ratings
XFINITY
Connection
Customer Rating
Cable
Frontier
Connection
Customer Rating
Fiber
DSL
EarthLink
Connection
Customer Rating
Fixed Wireless
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 Marlborough ratings may vary and are shown below.
Who is the Best Internet Provider in Marlborough, CT?
T-Mobile Home Internet is the best internet provider in Marlborough based on Connecticut 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 Marlborough, making it a solid recommendation among providers with reviews. T-Mobile Home Internet is an option for 98.50% of the city.
Click here to get T-Mobile Home Internet
or call 1-833-601-2935
Which Providers are Available at my Home in Marlborough?
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.
How Marlborough Compares to Places Its Size
Marlborough's report card score is in the top 18% and its connectivity index is in the top 2%.
| Measure | Marlborough | Rank among US towns of 1,000 to 9,999 people | Hartford County | Connecticut | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 96.7% | top 25% | 92.0% | 93.9% | 71.5% | 1,056 places at 100.0% |
| Average top speed | 6,810 Mbps | top 6% | 6,589 Mbps | 6,892 Mbps | 3,486 Mbps | Collegedale, TN and Lakesite, TN and 2 more (25,000 Mbps) |
| Providers at a typical address | 5.3 | bottom 46% | 6.8 | 6.8 | 7.1 | McLendon-Chisholm, TX (14.2) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.8 | top 16% | 2.5 | 2.5 | 2.7 | St. George, GA (6.2) |
| Workers who work from home | 33% | top 2% | 16% | 16% | 15% | Indian Springs, NV (76%) |
| Homes with a computer, tablet or phone | 98% | top 10% | 95% | 96% | 96% | 515 places at 100% |
| Homes with internet | 97% | top 5% | 92% | 93% | 91% | 115 places at 100% |
| Homes on fiber, cable or DSL | 90% | top 3% | 79% | 80% | 76% | Bunkerville, NV and Fort Myer, VA and 3 more (100%) |
| More about the households here | ||||||
| Homes with a desktop or laptop | 93% | top 4% | 81% | 83% | 81% | 12 places at 100% |
| Median household income | $138,440 | top 6% | $106,079 | $111,414 | $93,246 | 16 places at $250,001 |
| Residents in school (6th grade to college) | 16% | top 17% | 16% | 16% | 16% | University Park, PA (95%) |
Fiber reaches 96.7% of homes in Marlborough, against 92.0% across Hartford County and 93.9% across Connecticut. Households in Marlborough are larger than the US average (2.8 people against 2.7); 33% of workers work from home (US 15%); and the median household income is $138,440 (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 Marlborough
Which Fiber Internet Providers are Available in Marlborough?
Frontier Fiber in Marlborough, CT
Availability:
96.7%
Customer Rating:
(119)
Avg. Download Speed
7,000 Mbps
Frontier Communications offers Fiber service to 96.7% of Marlborough homes. Across the city, Frontier Fiber has speeds up to 7,000 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in Marlborough?
T-Mobile Home Internet Fixed Wireless in Marlborough, CT
Availability:
98.5%
Customer Rating:
(342)
Avg. Download Speed
72 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 98.5% of Marlborough homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 72 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.
Verizon Fixed Wireless in Marlborough, CT
Availability:
80.7%
Customer Rating:
(362)
Avg. Download Speed
229 Mbps
Verizon offers Fixed Wireless service to 80.7% of Marlborough homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 229 Mbps, with speeds from 25 Mpbs up to 300 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 6.0 and as high as 20, with an average of 16 Mbps throughout the city.
EarthLink Fixed Wireless in Marlborough, CT
Availability:
68.3%
Customer Rating:
(4)
Avg. Download Speed
32 Mbps
EarthLink offers Fixed Wireless service to 68.3% of Marlborough homes. Across the city, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 32 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 4.6 Mbps throughout the city.
AT&T Fixed Wireless in Marlborough, CT
Availability:
68.3%
Customer Rating:
(205)
Avg. Download Speed
32 Mbps
AT&T offers Fixed Wireless service to 68.3% of Marlborough homes. Across the city, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 32 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 4.6 Mbps throughout the city.
Which Cable Internet Providers are Available in Marlborough?
XFINITY Cable in Marlborough, CT
Availability:
100.0%
Customer Rating:
(2077)
Avg. Download Speed
1,529 Mbps
XFINITY from Comcast offers Cable service to 100.0% of Marlborough homes. Across the city, XFINITY Cable is the only type of service available from the company, with speeds up to 1,529 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 124 Mbps throughout the city.
Which DSL Internet Providers are Available in Marlborough?
Frontier DSL in Marlborough, CT
Availability:
13.0%
Customer Rating:
(58)
Avg. Download Speed
10 Mbps
Frontier Communications offers DSL service to 13.0% of Marlborough homes. Across the city, Frontier DSL has speeds up to 10 Mbps
Internet in Marlborough by Neighborhood and ZIP Code
Marlborough has 1 ZIP code with its own page. Each row links to that place’s page.
Neighborhoods in Marlborough
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
ZIP codes in Marlborough
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 06447 | 6,072 | 96.8% | 6,817 Mbps | 5.2 | B+ | 92/100 |
How Marlborough Compares to Nearby Places
The 10 places nearest to Marlborough that have their own pages are all within 8 miles. Among them, Westchester has the most homes with fiber (100.0%) and South Glastonbury the fewest (89.2%); Marlborough has 96.7%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Marlborough (this page) | 5,854 | 96.7% | 6,810 Mbps | 5.3 | B+ | 92/100 |
| Glastonbury | 21,006 | 93.9% | 6,288 Mbps | 7.1 | A- | 88/100 |
| East Hampton | 11,762 | 96.7% | 6,824 Mbps | 5.4 | B+ | 74/100 |
| Glastonbury Center | 8,208 | 96.6% | 6,726 Mbps | 7.3 | A- | 70/100 |
| Hebron | 6,064 | 97.3% | 6,843 Mbps | 5 | B+ | 89/100 |
| South Glastonbury | 5,933 | 89.2% | 6,461 Mbps | 6.8 | B+ | 92/100 |
| Amston | 4,651 | 98.8% | 6,934 Mbps | 4.9 | B+ | 87/100 |
| Andover | 3,378 | 98.1% | 6,919 Mbps | 5.6 | B+ | 80/100 |
| Westchester | 1,831 | 100.0% | 6,971 Mbps | 6 | A- | 79/100 |
| Lake Pocotopaug | 946 | 100.0% | 7,000 Mbps | 5.5 | A- | 69/100 |
| Cobalt | 74 | 74.3% | 7,000 Mbps | 4.5 | B- | 92/100 |
Who is the Fastest Internet Provider in Marlborough?
According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by XFINITY from Comcast. On the other hand, based on data provided by the internet providers to the FCC, Frontier Communications 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 Marlborough
| Frontier Communications | 7,000 |
|---|---|
| XFINITY from Comcast | 2,000 |
| Verizon | 300 |
| Viasat | 100 |
| T-Mobile Home Internet | 100 |
| AT&T | 100 |
| EarthLink | 100 |
| HughesNet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Marlborough. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Marlborough Internet Providers
Based on 68 reviews from Connecticut internet customers, T-Mobile Home Internet is the best internet service provider for Marlborough residents. T-Mobile Home Internet was rated at an average of 4.00 out of 5 in our report for overall customer satisfaction. Verizon wins for second-place in Connecticut, with 3.67 out of 5 stars and 80.7% coverage in Marlborough.
At a national level, based on 4780 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 Marlborough Internet Providers
The table below shows average customer ratings from customers in Marlborough, Connecticut, and customers throughout the country.
| ISP / Tech Type | Marlborough Overall | Connecticut Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet |  (0) | (4) | (342) | View Plans | ||
| Verizon | (0) | (6) | (816) | View Plans | ||
| Frontier | (0) | (14) | (177) | View Plans | ||
| XFINITY | (0) | (44) | (2379) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| AT&T | (0) | (0) | (1051) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans |
Customer Ratings for Internet Provider Speeds in Marlborough
Based on data reported by Marlborough ISPs to the FCC, the fastest speeds in the city are available through Frontier Communications. The company offers speeds up to 7,000 Mbps in Marlborough. Therefore, the average customer can get up to 7,000 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 XFINITY from Comcast. This indicates XFINITY reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Marlborough Speed | Connecticut Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Verizon | (0) | (6) | (816) | View Plans | ||
| XFINITY | (0) | (44) | (2379) | View Plans | ||
| T-Mobile Home Internet | (0) | (4) | (342) | View Plans | ||
| Frontier | (0) | (14) | (177) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| AT&T | (0) | (0) | (1051) | View Plans | ||
| EarthLink | (0) | (0) |  (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans |
Who is the Cheapest Internet Provider in Marlborough?
Of the providers in Marlborough, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Marlborough where enough of them have reviewed a provider, otherwise across Connecticut 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 4.00 out of 5 for price, which is higher than the average across all internet providers in the country. Verizon is rated second for affordability, with an average price rating of 3.67 out of 5.
The table below shows how customers in Marlborough, Connecticut, and the United States rated the affordability of their internet service.
Rated Affordability in Marlborough
| ISP / Tech Type | Marlborough Affordability | Connecticut Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (4) | (342) | View Plans | ||
| Verizon | (0) | (6) | (816) | View Plans | ||
| Frontier | (0) | (14) | (177) | View Plans | ||
| XFINITY | (0) | (44) | (2379) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| AT&T | (0) | (0) | (1051) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans |
Customer Reviews for Internet Service Providers in Connecticut
Customer Reviews
ISPReports User
XFINITY
August 02, 2026 spotty cell service for phone.
TK
XFINITY Cable
May 16, 2026 My internet provider is reliable and affordable.
A Rocky Hill, CT Customer
T-Mobile Home Internet Fixed Wireless
May 16, 2026 A Hartford, CT Customer
XFINITY Cable
April 28, 2026 Overall Xfinity provided very fast internet. The key is having a router that supports the higher speeds. The area we have struggled with the most is the price. We have gone back and forth with customer service to get lower rates given the more competitive prices being offered by new market entrants. Unfortunately Xfinity won't budge and may soon lose our service as the competitors provide faster speeds at lower cost.
lyssa l
XFINITY Cable
April 26, 2026 I've been using Xfinity for about two years now, and overall, it's been a solid experience. I work remotely and stream a lot of content, and the 200 Mbps plan has been more than enough for my needs. Speeds are consistent, and I rarely experience outages. I especially appreciate the self-service tools in the Xfinity app—it makes managing my plan and checking for issues super easy.
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Which ISP Should You Choose in Marlborough?
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 Marlborough is T-Mobile Home Internet.
- The fastest internet provider should be Frontier Communications. Considering speed for the money and reliability in speeds, XFINITY from Comcast may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Marlborough is T-Mobile Home Internet.
- XFINITY from Comcast, Viasat, and HughesNet has the broadest coverage in Marlborough, 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.