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Best Internet Providers in Theresa, NY

All 5 providers, ranked by coverage, speed and customer ratings

Theresa has 5 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Cable, Fiber, and Fixed Wireless internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 3 available internet technologies in Theresa.

This page reflects the most recent FCC update from October 19, 2026, based on the Broadband Data Collection as of December 31, 2025.

What changed
Homes with fiber39.6%Jefferson County 33.8%bottom 29%
Average top speed998 MbpsJefferson County 994 Mbpsbottom 28%
Providers52.5 at a typical addressbottom 4%
Homes with internet93%Jefferson County 92%top 22%
ISP Report CardD+score 23 of 100bottom 9%
Connectivity index63/100Jefferson County 63/100top 26%

Ranks compare Theresa with the 15,682 US towns of 1,000 to 9,999 people, the tiers of our fastest-cities rankings.

The Best Internet in Theresa, NY at a Glance

Top rankedSee the full rankingFirst in our Theresa ranking by coverage, speed and customer ratings.See plans
FastestSpectrumUp to 1,000 Mbps advertised to the FCCCompare speeds
Best ratedT-Mobile Home InternetRated 4.22 out of 5 by its customers, available to 61.51% of homesSee plans
Lowest priceSee prices by providerListed prices appear on each provider below.See plans

Theresa Internet Providers, Ranked by Coverage, Speed and Customer Ratings

Spectrum

Spectrum logo

Availability:

92.8%

Customer Rating:

3.3 of 5 stars

(1949)

View Plans

1-877-411-1381 Price: $30.00 - $105.00 / mo.

Connection

Availability

Avg. Download Speed InfoThe highest download speed available in Theresa.

Max Download Speed InfoCalculated from the maximum speeds available to most Theresa residents, weighted by block population.

Customer Rating

Cable

92.8%

1,000 Mbps

1,000 Mbps

Cable: 3.3 of 5 stars

(1739)

EarthLink

EarthLink logo

Availability:

38.1%

Customer Rating:

3.4 of 5 stars

(15)

View Plans

1-877-418-2092 Price: $39.95 - $69.95 / mo.

Connection

Availability

Avg. Download Speed InfoThe highest download speed available in Theresa.

Max Download Speed InfoCalculated from the maximum speeds available to most Theresa residents, weighted by block population.

Customer Rating

Fiber

38.1%

980 Mbps

980 Mbps

Fiber: 3.7 of 5 stars

(6)

Verizon

Verizon logo

Availability:

49.1%

Customer Rating:

3.8 of 5 stars

(816)

View Plans

1-833-213-7018 Price: $49.99 - $89.99 / mo.

Connection

Availability

Avg. Download Speed InfoThe highest download speed available in Theresa.

Max Download Speed InfoCalculated from the maximum speeds available to most Theresa residents, weighted by block population.

Customer Rating

Fiber

38.1%

980 Mbps

980 Mbps

Fiber: 3.9 of 5 stars

(453)

Fixed Wireless

13.6%

152 Mbps

300 Mbps

Wireless: 3.6 of 5 stars

(362)

T-Mobile Home Internet

T-Mobile Home Internet logo

Availability:

61.5%

Customer Rating:

4.0 of 5 stars

(342)

View Plans

1-833-601-2935 Price: Starting at $55.00 / mo.

Connection

Availability

Avg. Download Speed InfoThe highest download speed available in Theresa.

Max Download Speed InfoCalculated from the maximum speeds available to most Theresa residents, weighted by block population.

Customer Rating

Fixed Wireless

61.5%

33 Mbps

100 Mbps

Wireless: 4.0 of 5 stars

(342)

Castle Cable TV

Castle Cable TV logo

Availability:

1.5%

Customer Rating:

0.0 of 5 stars

(0)

View Plans

Price:

Connection

Availability

Avg. Download Speed InfoThe highest download speed available in Theresa.

Max Download Speed InfoCalculated from the maximum speeds available to most Theresa residents, weighted by block population.

Customer Rating

Fiber

1.5%

1,000 Mbps

1,000 Mbps

Fiber: 0.0 of 5 stars

(0)

Satellite providers, which generally offer 100% coverage across the United States, are available for Theresa residents as well. Some of the top satellite options include Dish Network, DirecTV, HughesNet, Viasat, and Starlink. These providers offer varied services and pricing, giving residents flexibility in choosing the best option for their location and needs.

Starlink

Starlink logo

Availability:

100%

Customer Rating:

3.9 of 5 stars

(65)

View Plans

Price: $55.00 - $130.00 / mo.

Viasat

Viasat logo

Availability:

100%

Customer Rating:

1.7 of 5 stars

(12)

View Plans

1-833-875-1370 Price: $69.99 - $179.99 / mo.

DirecTV

DirecTV logo

Availability:

100%

Customer Rating:

4.3 of 5 stars

(9)

Dish

Dish logo

Availability:

100%

Customer Rating:

3.7 of 5 stars

(13)

View Plans

1-833-875-1332 Price: $55.00 / mo.

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 Theresa ratings may vary and are shown below.

Who is the Best Internet Provider in Theresa, NY?

T-Mobile Home Internet is the best internet provider in Theresa based on New York 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 Theresa, making it a solid recommendation among providers with reviews. T-Mobile Home Internet is an option for 61.51% of the city.

Which Providers are Available at my Home in Theresa?

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.

Theresa, NY map of internet availability

How Theresa Compares to Places Its Size

Theresa's report card score is in the bottom 9% and its connectivity index is in the top 26%.

D+score 23 of 100ISP Report CardGrades what providers offer: fiber availability, the download speed most homes can get and the number of providers at a typical address.bottom 9%
63/100Jefferson County 63/100, US 69/100Digital Connectivity IndexMeasures how much households need and use the internet: household size, working from home, devices and subscriptions.top 26%
Measure Theresa Rank among US towns of 1,000 to 9,999 people Jefferson County New York US Leader
ISP Report Card inputs: what providers offer here
Fiber availability 39.6% bottom 29% 33.8% 86.4% 71.5% 1,056 places at 100.0%
Average top speed 998 Mbps bottom 28% 994 Mbps 4,235 Mbps 3,486 Mbps Collegedale, TN and Lakesite, TN and 2 more (25,000 Mbps)
Providers at a typical address 2.5 bottom 4% 3.4 5.2 7.1 McLendon-Chisholm, TX (14.2)
Connectivity index inputs: how much households need and use the internet
People per household 2.6 top 33% 2.4 2.6 2.7 St. George, GA (6.2)
Workers who work from home 11% top 39% 8% 15% 15% Indian Springs, NV (76%)
Homes with a computer, tablet or phone 94% top 48% 95% 95% 96% 515 places at 100%
Homes with internet 93% top 22% 92% 91% 91% 115 places at 100%
Homes on fiber, cable or DSL 74% top 31% 77% 77% 76% Bunkerville, NV and Fort Myer, VA and 3 more (100%)
More about the households here
Homes with a desktop or laptop 80% top 33% 80% 80% 81% 12 places at 100%
Median household income $79,104 top 42% $70,553 $100,975 $93,246 16 places at $250,001
Residents in school (6th grade to college) 16% top 17% 14% 16% 16% University Park, PA (95%)

Fiber reaches 39.6% of homes in Theresa, against 33.8% across Jefferson County and 86.4% across New York. Households in Theresa are smaller than the US average (2.6 people against 2.7); 11% of workers work from home (US 15%); and the median household income is $79,104 (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 Theresa

Which Fiber Internet Providers are Available in Theresa?

EarthLink Fiber in Theresa, NY

EarthLink logo

Availability:

38.1%

Customer Rating:

3.7 of 5 stars

(6)

Avg. Download Speed

980 Mbps

EarthLink offers Fiber service to 38.1% of Theresa homes. Across the city, EarthLink Fiber is the only type of service available from the company, with speeds up to 980 Mbps, with speeds from 980 Mpbs up to 980 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 880 and as high as 880, with an average of 880 Mbps throughout the city. EarthLink Fiber is rated about the same as other types of internet service available in Theresa from EarthLink in terms of customer satisfaction.

Verizon Fiber in Theresa, NY

Verizon logo

Availability:

38.1%

Customer Rating:

3.9 of 5 stars

(453)

Avg. Download Speed

980 Mbps

Verizon offers Fiber service to 38.1% of Theresa homes. Across the city, Verizon Fiber has speeds up to 980 Mbps, with speeds from 980 Mpbs up to 980 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 880 and as high as 880, with an average of 880 Mbps throughout the city. Verizon Fiber is rated about the same as other types of internet service available in Theresa from Verizon in terms of customer satisfaction.

Castle Cable TV Fiber in Theresa, NY

Castle Cable TV logo

Availability:

1.5%

Customer Rating:

 of 5 stars

(0)

Avg. Download Speed

1,000 Mbps

Castle Cable TV offers Fiber service to 1.5% of Theresa homes. Across the city, Castle Cable TV Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps, with speeds from 1,000 Mpbs up to 1,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 500 and as high as 500, with an average of 500 Mbps throughout the city. Castle Cable TV Fiber is rated other types of internet service available in Theresa from Castle Cable TV in terms of customer satisfaction.

Which Fixed Wireless and LTE Internet Providers are Available in Theresa?

T-Mobile Home Internet Fixed Wireless in Theresa, NY

T-Mobile Home Internet logo

Availability:

61.5%

Customer Rating:

4.0 of 5 stars

(342)

Avg. Download Speed

33 Mbps

T-Mobile Home Internet offers Fixed Wireless service to 61.5% of Theresa 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. T-Mobile Home Internet Fixed Wireless is rated other types of internet service available in Theresa from T-Mobile Home Internet in terms of customer satisfaction.

Verizon Fixed Wireless in Theresa, NY

Verizon logo

Availability:

13.6%

Customer Rating:

3.6 of 5 stars

(362)

Avg. Download Speed

152 Mbps

Verizon offers Fixed Wireless service to 13.6% of Theresa homes. Across the city, Verizon Fixed Wireless has speeds up to 152 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 12 Mbps throughout the city. Verizon Fixed Wireless is rated other types of internet service available in Theresa from Verizon in terms of customer satisfaction.

Which Cable Internet Providers are Available in Theresa?

Spectrum Cable in Theresa, NY

Spectrum logo

Availability:

92.8%

Customer Rating:

3.3 of 5 stars

(1739)

Avg. Download Speed

1,000 Mbps

Spectrum offers Cable service to 92.8% of Theresa homes. Across the city, Spectrum Cable is the only type of service available from the company, with speeds up to 1,000 Mbps, with speeds from 1,000 Mpbs up to 1,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 35 and as high as 1,000, with an average of 669 Mbps throughout the city. Spectrum Cable is rated higher than other types of internet service available in Theresa from Spectrum in terms of customer satisfaction.

Which DSL Internet Providers are Available in Theresa?

According to the most recently submitted data by internet service providers to the FCC, there are currently no DSL providers available in Theresa, NY.

Internet in Theresa by Neighborhood and ZIP Code

Theresa has 1 ZIP code with its own page. Each row links to that place’s page.

Neighborhoods in Theresa

Neighborhood People Homes with fiber Average top speed Providers at a typical address Report card Connectivity

ZIP codes in Theresa

ZIP code People Homes with fiber Average top speed Providers at a typical address Report card Connectivity
136912,965 47.5%997 Mbps2.7D+57/100

How Theresa Compares to Nearby Places

The 10 places nearest to Theresa that have their own pages are all within 9 miles. Among them, Redwood has the most homes with fiber (93.9%) and Evans Mills the fewest (8.7%); Theresa has 39.6%.

Place People Homes with fiber Average top speed Providers at a typical address Report card Connectivity
Theresa (this page)2,676 39.6%998 Mbps2.5D+63/100
Evans Mills3,876 8.7%994 Mbps3D64/100
Philadelphia1,918 9.7%971 Mbps2.9D58/100
La Fargeville1,589 84.0%1,000 Mbps4.2C48/100
Redwood1,350 93.9%981 Mbps3.7C38/100
Antwerp1,135 32.4%967 Mbps3.3D+40/100
Plessis841 96.1%1,000 Mbps4.2C+34/100
Orleans Four Corners383 57.4%1,000 Mbps3.6C-36/100
Oxbow310 97.1%996 Mbps3.1C32/100
Omar226 100.0%1,000 Mbps4.7B-39/100
Westminster Park102 100.0%1,000 Mbps4.3B-42/100

Who is the Fastest Internet Provider in Theresa?

According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by Verizon. 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 Theresa

Max Advertised Speed in Theresa, NY
Spectrum1,000
Castle Cable TV1,000
Verizon980
EarthLink980
Viasat100
T-Mobile Home Internet100
HughesNet25

How fast is your internet?

Test your connection here and see it next to the speeds providers advertise in Theresa. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.

Customer Ratings for Theresa Internet Providers

Based on 348 reviews from New York internet customers, T-Mobile Home Internet is the best internet service provider for Theresa residents. T-Mobile Home Internet was rated at an average of 4.22 out of 5 in our report for overall customer satisfaction. Verizon wins for second-place in New York, with 3.74 out of 5 stars and 49.1% coverage in Theresa.

At a national level, based on 3122 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 Theresa Internet Providers

The table below shows average customer ratings from customers in Theresa, New York, and customers throughout the country.

ISP / Tech TypeTheresa OverallNew York OverallNational OverallFor Service
T-Mobile Home InternetNo rating yet (0)4 of 5 stars (18)4 of 5 stars (342)View Plans
VerizonNo rating yet (0)3.5 of 5 stars (140)4 of 5 stars (816)View Plans
EarthLinkNo rating yet (0)3 of 5 stars (1)3.5 of 5 stars (15)View Plans
SpectrumNo rating yet (0)3 of 5 stars (189)3.5 of 5 stars (1949)View Plans
HughesNetNo rating yet (0)No rating yet (0)2.5 of 5 stars (25)View Plans
ViasatNo rating yet (0)No rating yet (0)1.5 of 5 stars (12)View Plans
Castle Cable TVNo rating yet (0)No rating yet (0)No rating yet (0)View Plans

Customer Ratings for Internet Provider Speeds in Theresa

Based on data reported by Theresa ISPs to the FCC, the fastest speeds in the city are available through Spectrum. The company offers speeds up to 1,000 Mbps in Theresa. 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.

However, actual customers rated their satisfaction with internet speed highest with Verizon. This indicates Verizon reliably delivers speeds expected by the customer based on the plan they are paying for.

ISP / Tech TypeTheresa SpeedNew York SpeedNational SpeedFor Service
VerizonNo rating yet (0)4 of 5 stars (140)4 of 5 stars (816)View Plans
T-Mobile Home InternetNo rating yet (0)4 of 5 stars (18)4 of 5 stars (342)View Plans
EarthLinkNo rating yet (0)3 of 5 stars (1)3 of 5 stars (15)View Plans
SpectrumNo rating yet (0)3.5 of 5 stars (189)3.5 of 5 stars (1949)View Plans
HughesNetNo rating yet (0)No rating yet (0)2.5 of 5 stars (25)View Plans
ViasatNo rating yet (0)No rating yet (0)1.5 of 5 stars (12)View Plans
Castle Cable TVNo rating yet (0)No rating yet (0)No rating yet (0)View Plans

Who is the Cheapest Internet Provider in Theresa?

Of the providers in Theresa, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Theresa where enough of them have reviewed a provider, otherwise across New York 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 4.11 out of 5 for price, which is higher than the average across all internet providers in the country. EarthLink is rated second for affordability, with an average price rating of 2.00 out of 5.

The table below shows how customers in Theresa, New York, and the United States rated the affordability of their internet service.

Rated Affordability in Theresa

ISP / Tech TypeTheresa AffordabilityNew York AffordabilityNational AffordabilityFor Service
T-Mobile Home InternetNo rating yet (0)4 of 5 stars (18)4 of 5 stars (342)View Plans
EarthLinkNo rating yet (0)2 of 5 stars (1)3 of 5 stars (15)View Plans
VerizonNo rating yet (0)3.5 of 5 stars (140)3.5 of 5 stars (816)View Plans
SpectrumNo rating yet (0)2.5 of 5 stars (189)3 of 5 stars (1949)View Plans
HughesNetNo rating yet (0)No rating yet (0)2.5 of 5 stars (25)View Plans
ViasatNo rating yet (0)No rating yet (0)1.5 of 5 stars (12)View Plans
Castle Cable TVNo rating yet (0)No rating yet (0)No rating yet (0)View Plans

Customer Reviews for Internet Service Providers in New York

Customer Reviews

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ISPReports User

Verizon Fiber

1 of 5 stars November 13, 2026

do not buy they implemented a new interface that is user hostlie cannot forward through comercials tivo quit working avoid, avoid, avoid

Plan Pricing: 1 of 5 stars
Internet Speed: 3 of 5 stars
Overall Rating: 1 of 5 stars

ISPReports User

Fidium

1 of 5 stars October 31, 2026

Impossible to reach and very difficult to get help - never in real time.

Plan Pricing: 1 of 5 stars
Internet Speed: 1 of 5 stars
Overall Rating: 1 of 5 stars

ISPReports User

Optimum Cable

3 of 5 stars September 06, 2026
Plan Pricing: 3 of 5 stars
Internet Speed: 3 of 5 stars
Overall Rating: 3 of 5 stars

An angry resident of Glenville, NY

Spectrum Cable

2 of 5 stars July 06, 2026

Spectrum is slow, has poor customer service and also has a monopoly in my area. There is no competition. 5G internet service is not available as there is very poor cell signal at my home. Additionally, Verizon began running FiOS to my neighborhood and then stopped. I can only guess because Spectrum holds the cable franchise rights in the town of Glenville and is fighting to hold on to whatever market share they have.

Plan Pricing: 2 of 5 stars
Internet Speed: 2 of 5 stars
Overall Rating: 2 of 5 stars

A Addison, NY Customer

T-Mobile Home Internet Fixed Wireless

5 of 5 stars June 09, 2026
Plan Pricing: 5 of 5 stars
Internet Speed: 5 of 5 stars
Overall Rating: 5 of 5 stars

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Which ISP Should You Choose in Theresa?

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 Theresa is T-Mobile Home Internet.
  • The fastest internet provider should be Spectrum. Considering speed for the money and reliability in speeds, Verizon may be a better choice based on real-world local customer feedback.
  • The most affordable internet provider in Theresa is T-Mobile Home Internet.
  • Viasat, Spectrum, and HughesNet has the broadest coverage in Theresa, available to 92.8% 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.