Best Internet Providers in Mountainside, NJ
All 5 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Mountainside, NJ
Mountainside has 5 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, 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 Mountainside.
Ranks compare Mountainside with the 15,682 US towns of 1,000 to 9,999 people, the tiers of our fastest-cities rankings.
The Best Internet in Mountainside, NJ at a Glance
Mountainside Internet Providers, Ranked by Coverage, Speed and Customer Ratings
XFINITY
Connection
Customer Rating
Cable
EarthLink
Connection
Customer Rating
Fiber
Fixed Wireless
Verizon
Connection
Customer Rating
Fiber
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 Mountainside ratings may vary and are shown below.
Who is the Best Internet Provider in Mountainside, NJ?
Verizon is the highest-rated internet provider in Mountainside based on 168 New Jersey 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.
or call 1-833-213-7018
Which Providers are Available at my Home in Mountainside?
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 Mountainside Compares to Places Its Size
Mountainside's report card score is in the top 11% and its connectivity index is in the top 1%.
| Measure | Mountainside | Rank among US towns of 1,000 to 9,999 people | Union County | New Jersey | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 99.1% | top 16% | 97.3% | 80.8% | 71.5% | 1,056 places at 100.0% |
| Average top speed | 2,283 Mbps | top 27% | 4,582 Mbps | 4,593 Mbps | 3,486 Mbps | Collegedale, TN and Lakesite, TN and 2 more (25,000 Mbps) |
| Providers at a typical address | 6.5 | top 28% | 6.5 | 6.4 | 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% | 3.0 | 2.8 | 2.7 | St. George, GA (6.2) |
| Workers who work from home | 24% | top 6% | 14% | 17% | 15% | Indian Springs, NV (76%) |
| Homes with a computer, tablet or phone | 100% | top 1% | 96% | 96% | 96% | Tied with 514 other places at 100% |
| Homes with internet | 99% | top 1% | 94% | 93% | 91% | 115 places at 100% |
| Homes on fiber, cable or DSL | 95% | top 1% | 80% | 81% | 76% | Bunkerville, NV and Fort Myer, VA and 3 more (100%) |
| More about the households here | ||||||
| Homes with a desktop or laptop | 97% | top 1% | 82% | 84% | 81% | 12 places at 100% |
| Median household income | $204,089 | top 2% | $119,171 | $118,198 | $93,246 | 16 places at $250,001 |
| Residents in school (6th grade to college) | 13% | top 43% | 16% | 16% | 16% | University Park, PA (95%) |
Fiber reaches 99.1% of homes in Mountainside, against 97.3% across Union County and 80.8% across New Jersey. Households in Mountainside are larger than the US average (2.8 people against 2.7); 24% of workers work from home (US 15%); and the median household income is $204,089 (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 Mountainside
Which Fiber Internet Providers are Available in Mountainside?
EarthLink Fiber in Mountainside, NJ
Availability:
99.1%
Customer Rating:
(6)
Avg. Download Speed
2,236 Mbps
EarthLink offers Fiber service to 99.1% of Mountainside homes. Across the city, EarthLink Fiber has speeds up to 2,236 Mbps, with speeds from 980 Mpbs up to 2,300 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 880 and as high as 2,300, with an average of 2,231 Mbps throughout the city. EarthLink Fiber is rated about the same as other types of internet service available in Mountainside from EarthLink in terms of customer satisfaction.
Verizon Fiber in Mountainside, NJ
Availability:
99.1%
Customer Rating:
(453)
Avg. Download Speed
2,236 Mbps
Verizon offers Fiber service to 99.1% of Mountainside homes. Across the city, Verizon Fiber has speeds up to 2,236 Mbps, with speeds from 980 Mpbs up to 2,300 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 880 and as high as 2,300, with an average of 2,231 Mbps throughout the city. Verizon Fiber is rated about the same as other types of internet service available in Mountainside from Verizon in terms of customer satisfaction.
Which Fixed Wireless and LTE Internet Providers are Available in Mountainside?
T-Mobile Home Internet Fixed Wireless in Mountainside, NJ
Availability:
97.5%
Customer Rating:
(342)
Avg. Download Speed
65 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 97.5% of Mountainside homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 65 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 city.
EarthLink Fixed Wireless in Mountainside, NJ
Availability:
96.4%
Customer Rating:
(4)
Avg. Download Speed
44 Mbps
EarthLink offers Fixed Wireless service to 96.4% of Mountainside homes. Across the city, EarthLink Fixed Wireless has speeds up to 44 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 7.2 Mbps throughout the city.
AT&T Fixed Wireless in Mountainside, NJ
Availability:
96.4%
Customer Rating:
(205)
Avg. Download Speed
44 Mbps
AT&T offers Fixed Wireless service to 96.4% of Mountainside homes. Across the city, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 44 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 7.2 Mbps throughout the city.
Verizon Fixed Wireless in Mountainside, NJ
Availability:
61.6%
Customer Rating:
(362)
Avg. Download Speed
229 Mbps
Verizon offers Fixed Wireless service to 61.6% of Mountainside homes. Across the city, Verizon Fixed Wireless has 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.
Which Cable Internet Providers are Available in Mountainside?
XFINITY Cable in Mountainside, NJ
Availability:
99.9%
Customer Rating:
(2077)
Avg. Download Speed
2,000 Mbps
XFINITY from Comcast offers Cable service to 99.9% of Mountainside homes. Across the city, XFINITY Cable is the only type of service available from the company, with speeds up to 2,000 Mbps
Which DSL Internet Providers are Available in Mountainside?
According to the most recently submitted data by internet service providers to the FCC, there are currently no DSL providers available in Mountainside, NJ.
Internet in Mountainside by Neighborhood and ZIP Code
Mountainside has 1 ZIP code with its own page. Each row links to that place’s page.
Neighborhoods in Mountainside
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
ZIP codes in Mountainside
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 07092 | 7,082 | 99.0% | 2,285 Mbps | 6.5 | B+ | 93/100 |
How Mountainside Compares to Nearby Places
The 10 places nearest to Mountainside that have their own pages are all within 4 miles. Among them, Garwood has the most homes with fiber (100.0%) and Berkeley Heights the fewest (93.0%); Mountainside has 99.1%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Mountainside (this page) | 8,241 | 99.1% | 2,283 Mbps | 6.5 | B+ | 94/100 |
| Westfield | 30,073 | 99.5% | 2,301 Mbps | 6.2 | B+ | 94/100 |
| Scotch Plains | 24,340 | 96.0% | 2,637 Mbps | 6.7 | B+ | 95/100 |
| Cranford | 23,610 | 99.9% | 2,457 Mbps | 6 | B+ | 83/100 |
| Summit | 22,787 | 99.0% | 2,004 Mbps | 6 | B+ | 89/100 |
| Springfield | 17,859 | 99.4% | 2,267 Mbps | 6.5 | B+ | 83/100 |
| New Providence | 13,646 | 96.9% | 2,287 Mbps | 6.3 | B+ | 87/100 |
| Berkeley Heights | 13,398 | 93.0% | 2,524 Mbps | 6.4 | B | 93/100 |
| Kenilworth | 8,469 | 99.8% | 2,289 Mbps | 5.5 | B+ | 70/100 |
| Fanwood | 7,816 | 100.0% | 2,282 Mbps | 6.4 | A- | 91/100 |
| Garwood | 4,735 | 100.0% | 2,282 Mbps | 6.6 | A- | 70/100 |
Who is the Fastest Internet Provider in Mountainside?
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, EarthLink and Verizon 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 Mountainside
| EarthLink | 2,300 |
|---|---|
| Verizon | 2,300 |
| XFINITY from Comcast | 2,000 |
| Viasat | 100 |
| T-Mobile Home Internet | 100 |
| AT&T | 100 |
| HughesNet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Mountainside. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Mountainside Internet Providers
Based on 168 reviews from New Jersey internet customers, Verizon is the best internet service provider for Mountainside residents. Verizon was rated at an average of 3.79 out of 5 in our report for overall customer satisfaction. AT&T wins for second-place in New Jersey, with 3.50 out of 5 stars and 96.4% coverage in Mountainside.
At a national level, based on 4603 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 Mountainside Internet Providers
The table below shows average customer ratings from customers in Mountainside, New Jersey, and customers throughout the country.
| ISP / Tech Type | Mountainside Overall | New Jersey Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Verizon |  (0) | (89) | (816) | View Plans | ||
| AT&T | (0) | (2) | (1051) | View Plans | ||
| T-Mobile Home Internet | (0) | (6) | (342) | View Plans | ||
| XFINITY | (0) |  (71) | (2379) | View Plans | ||
| HughesNet | (0) | (0) |  (25) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans |
Customer Ratings for Internet Provider Speeds in Mountainside
Based on data reported by Mountainside ISPs to the FCC, the fastest speeds in the city are available through EarthLink and Verizon. These internet providers offer speeds up to 2,300 Mbps in Mountainside. Therefore, the average customer can get up to 2,236 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 Verizon. This indicates Verizon reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Mountainside Speed | New Jersey Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Verizon | (0) | (89) | (816) | View Plans | ||
| XFINITY | (0) | (71) | (2379) | View Plans | ||
| AT&T | (0) | (2) | (1051) | View Plans | ||
| T-Mobile Home Internet | (0) | (6) | (342) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans |
Who is the Cheapest Internet Provider in Mountainside?
Of the providers in Mountainside, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Mountainside where enough of them have reviewed a provider, otherwise across New Jersey 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 3.50 out of 5 for price, which is lower than the average across all internet providers in the country. AT&T is rated second for affordability, with an average price rating of 2.50 out of 5.
The table below shows how customers in Mountainside, New Jersey, and the United States rated the affordability of their internet service.
Rated Affordability in Mountainside
| ISP / Tech Type | Mountainside Affordability | New Jersey Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (6) | (342) | View Plans | ||
| AT&T | (0) | (2) | (1051) | View Plans | ||
| Verizon | (0) | (89) | (816) | View Plans | ||
| XFINITY | (0) | (71) | (2379) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans |
Customer Reviews for Internet Service Providers in New Jersey
Customer Reviews
Alexander T.
Starlink Satellite
June 16, 2026 Starlink is a satellite internet service from SpaceX that’s great for people in rural or remote areas. It usually gives fast speeds around 100 to 250 Mbps and works well for things like streaming, video calls, and browsing. It does cost more to set up at first, and bad weather can sometimes affect the signal, but overall it’s a solid option if you don’t have access to cable or fiber internet.
A Wanaque, NJ Customer
Optimum Cable
June 06, 2026 Our internet provider does give us consistent service and high speeds. It's Optimum, and I am happy with that aspect of the company. They are also our cable company, and that aspect of the company has changed for the worse. Prices are climbing but we get poorer service. They are closing local stores and pushing cell phone plans on us instead of fixing our issues. So I have a mixed feeling about the company overall, but the internet service has been solid and reliable.
A Jersey City, NJ Customer
Verizon Fiber
June 04, 2026 
A Teaneck, NJ Customer
Verizon Fiber
May 24, 2026 A Elmer, NJ Customer
XFINITY Cable
May 13, 2026 Because Comcast is the only option for internet service unless I want to use a satellite provider, they seem to think they can get away with charging what they link. They refuse to allow existing customers to take advantage of new customer pricing. Their upload speeds are terrible, much slower than download speeds. If I had a viable alternative I would switch but unfortunately I am stuck with them.
Rate your provider
Share your experience to help others in your area choose.
Verified customer: we detected your connection is on this provider.
Reviews are independent and unedited. Published after a quick spam check.
Which ISP Should You Choose in Mountainside?
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 Mountainside is Verizon.
- The fastest internet provider should be EarthLink and Verizon. 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 Mountainside is T-Mobile Home Internet.
- XFINITY from Comcast, Viasat, and HughesNet has the broadest coverage in Mountainside, available to 99.9% 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.