Best Internet Providers in St. Clair County, MI
All 12 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in St. Clair County, MI
St. Clair County has 12 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 county. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in St. Clair County.
Ranks compare St. Clair County with the 83 Michigan counties.
The Best Internet in St. Clair County, MI at a Glance
St. Clair County Internet Providers, Ranked by Coverage, Speed and Customer Ratings
XFINITY
Connection
Customer Rating
Fiber
Cable
EarthLink
Connection
Customer Rating
Fiber
DSL
Fixed Wireless
AT&T
Connection
Customer Rating
Fiber
DSL
Fixed Wireless
T-Mobile Home Internet
Connection
Customer Rating
Fixed Wireless
Providers with less than 1% coverage in this county 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 St. Clair County ratings may vary and are shown below.
Who is the Best Internet Provider in St. Clair County, MI?
AT&T is the highest-rated internet provider in St. Clair County based on 229 Michigan 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 1-877-610-1219
Which Providers are Available at my Home in St. Clair County?
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 St. Clair County
- XFINITY - cable coverage map
- AT&T - fiber coverage map
- EarthLink - fiber coverage map
- Mercury Broadband - fiber coverage map
- XFINITY - fiber coverage map
- Frontier - fiber coverage map
- Verizon - fixed wireless coverage map
- T-Mobile Home Internet - fixed wireless coverage map
- Duke Broadband - fiber coverage map
- Mercury Broadband - fixed wireless coverage map
- AT&T - fixed wireless coverage map
- EarthLink - fixed wireless coverage map
- AT&T - dsl coverage map
- EarthLink - dsl coverage map
- Highline - fiber coverage map
- Spectrum - cable coverage map
- Frontier - dsl coverage map
- Agri-Valley Communications - fixed wireless coverage map
- Air Advantage - fixed wireless coverage map
How St. Clair County Compares to the Rest of Michigan
St. Clair County's report card score is tied 32nd of 83 and its connectivity index is tied 27th of 83.
| Measure | St. Clair County | Rank among Michigan counties | Michigan | US | Leader |
|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | |||||
| Fiber availability | 34.0% | 61st of 83 | 49.6% | 71.5% | Presque Isle County (98.2%) |
| Average top speed | 2,187 Mbps | 31st of 83 | 2,778 Mbps | 3,486 Mbps | Allegan County (5,539 Mbps) |
| Providers at a typical address | 6.4 | Tied 24th of 83 | 7.1 | 7.1 | Ingham County and Isabella County (8.4) |
| Connectivity index inputs: how much households need and use the internet | |||||
| People per household | 2.4 | Tied 29th of 83 | 2.5 | 2.7 | Montcalm County (2.8) |
| Workers who work from home | 8% | Tied 57th of 83 | 14% | 15% | Washtenaw County (22%) |
| Homes with a computer, tablet or phone | 95% | Tied 17th of 83 | 95% | 96% | Ottawa County and Washtenaw County (98%) |
| Homes with internet | 91% | Tied 14th of 83 | 91% | 91% | Oakland County (95%) |
| Homes on fiber, cable or DSL | 68% | Tied 29th of 83 | 73% | 76% | Oakland County (84%) |
| More about the households here | |||||
| Homes with a desktop or laptop | 76% | Tied 29th of 83 | 79% | 81% | Washtenaw County (89%) |
| Median household income | $73,052 | 25th of 83 | $82,590 | $93,246 | Oakland County ($114,671) |
| Residents in school (6th grade to college) | 12% | Tied 40th of 83 | 15% | 16% | Houghton County (29%) |
Fiber reaches 34.0% of homes in St. Clair County, against 49.6% across Michigan. Households in St. Clair County 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 $73,052 (US $93,246).
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
How St. Clair County Compares to Its Neighbors
St. Clair County has 3 neighbors. Among them, Sanilac County has the most homes with fiber (79.8%) and Lapeer County the fewest (16.8%); St. Clair County has 34.0%.
Map of St. Clair County and its neighbors by ISP Report Card grade
Hover over or tap a county for its numbers, and click through to its page.
St. Clair County and its neighbors
| County | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| St. Clair County (this page) | 160,383 | 34.0% | 2,187 Mbps | 6.4 | C+ | 49/100 |
| Macomb County | 881,217 | 44.8% | 2,959 Mbps | 7.9 | B | 70/100 |
| Lapeer County | 88,619 | 16.8% | 1,641 Mbps | 6.8 | C+ | 45/100 |
| Sanilac County | 40,611 | 79.8% | 1,241 Mbps | 6.3 | B- | 28/100 |
Internet in St. Clair County by City and ZIP Code
Fiber reaches from 0.0% of homes in Harsens Island to 89.2% in Roseburg; by ZIP code, from 2.5% in 48001 (Algonac) to 87.0% in 48097 (Yale). Each row links to that place’s page.
Cities and towns in St. Clair County
| City or town | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Port Huron | 39,479 | 32.4% | 2,663 Mbps | 7 | B- | 48/100 |
| Fort Gratiot | 14,479 | 54.0% | 3,501 Mbps | 7.6 | B | 57/100 |
| St. Clair | 11,385 | 30.5% | 1,444 Mbps | 6.2 | C | 62/100 |
| Algonac | 11,012 | 3.0% | 1,347 Mbps | 5.2 | C- | 55/100 |
| Marysville | 10,012 | 3.6% | 1,634 Mbps | 5.7 | C | 52/100 |
| Smiths Creek | 9,647 | 27.8% | 2,307 Mbps | 6.2 | C+ | 59/100 |
| Marine City | 7,107 | 22.7% | 1,246 Mbps | 4.9 | C- | 45/100 |
| East China | 6,501 | 23.5% | 1,203 Mbps | 4.9 | C- | 51/100 |
| North Street | 5,905 | 65.1% | 3,661 Mbps | 7.7 | B | 57/100 |
| Fair Haven | 5,192 | 20.9% | 1,558 Mbps | 5.7 | C | 60/100 |
| Capac | 4,523 | 74.6% | 3,042 Mbps | 7.5 | B | 39/100 |
| Memphis | 3,999 | 84.1% | 3,423 Mbps | 6.8 | B | 31/100 |
| Yale | 3,290 | 77.3% | 4,432 Mbps | 7.7 | B+ | 26/100 |
| Columbus | 3,270 | 17.4% | 1,024 Mbps | 5 | C- | 40/100 |
| Casco | 3,068 | 20.1% | 1,286 Mbps | 5 | C- | 46/100 |
| Allenton | 2,801 | 20.9% | 1,013 Mbps | 6.9 | C | 27/100 |
| Goodells | 2,728 | 58.2% | 1,293 Mbps | 5.1 | C | 50/100 |
| Avoca | 2,563 | 8.1% | 490 Mbps | 5.2 | D+ | 34/100 |
| Jeddo | 1,993 | 80.0% | 2,864 Mbps | 8.1 | B+ | 38/100 |
| Roseburg | 1,784 | 89.2% | 2,996 Mbps | 7.8 | B+ | 30/100 |
| Emmett | 1,764 | 30.8% | 1,210 Mbps | 6.5 | C+ | 28/100 |
| Harsens Island | 1,052 | 0.0% | 1,222 Mbps | 5.1 | D+ | 52/100 |
| Berville | 850 | 70.2% | 1,728 Mbps | 8.1 | B | 31/100 |
| Thornton | 828 | 41.3% | 1,373 Mbps | 6.3 | C+ | 47/100 |
| Riley Center | 809 | 74.4% | 3,594 Mbps | 7.1 | B | 30/100 |
| Fargo | 792 | 9.2% | 187 Mbps | 5.4 | D+ | 33/100 |
| Anchorville | 786 | 52.9% | 1,623 Mbps | 6.5 | C+ | 41/100 |
| Rattle Run | 749 | 62.4% | 1,953 Mbps | 7.2 | B- | 51/100 |
| Peters | 705 | 46.0% | 1,438 Mbps | 5 | C | 67/100 |
| Muttonville | 670 | 0.0% | 1,192 Mbps | 5.8 | C- | 54/100 |
| Four Towns | 507 | 26.2% | 1,200 Mbps | 4.9 | C- | 44/100 |
| Mount Vernon | 407 | 0.0% | 976 Mbps | 4.8 | D | 48/100 |
| Ruby | 406 | 0.0% | 503 Mbps | 5.8 | D+ | 34/100 |
| Lakeport | 379 | 100.0% | 4,066 Mbps | 10.5 | A | 51/100 |
| Riverside | 166 | 0.0% | 1,193 Mbps | 6.9 | C- | 65/100 |
| Pearl Beach | 141 | 0.0% | 1,167 Mbps | 4.8 | D+ | 78/100 |
| Roberts Landing | 127 | 0.0% | 1,200 Mbps | 4.8 | D+ | 65/100 |
ZIP codes in St. Clair County
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 48060 (Port Huron) | 39,783 | 32.8% | 2,678 Mbps | 7 | B- | 48/100 |
| 48059 (Fort Gratiot) | 15,311 | 56.4% | 3,535 Mbps | 7.7 | B | 59/100 |
| 48079 (St. Clair) | 12,556 | 32.8% | 1,478 Mbps | 6.2 | C+ | 61/100 |
| 48001 (Algonac) | 11,588 | 2.5% | 1,339 Mbps | 5.2 | C- | 56/100 |
| 48040 (Marysville) | 9,994 | 3.6% | 1,634 Mbps | 5.7 | C | 52/100 |
| 48074 (Smiths Creek) | 9,515 | 26.4% | 2,316 Mbps | 6.2 | C+ | 59/100 |
| 48039 (Marine City) | 7,738 | 23.9% | 1,262 Mbps | 4.9 | C- | 45/100 |
| 48054 (East China) | 7,139 | 25.2% | 1,204 Mbps | 4.9 | C- | 52/100 |
| 48049 (North Street) | 5,659 | 58.4% | 3,346 Mbps | 7.4 | B | 49/100 |
| 48097 (Yale) | 5,110 | 87.0% | 3,978 Mbps | 7.7 | B+ | 27/100 |
| 48023 (Fair Haven) | 4,967 | 19.4% | 1,554 Mbps | 5.7 | C | 61/100 |
| 48041 (Memphis) | 4,275 | 82.5% | 3,312 Mbps | 6.8 | B | 31/100 |
| 48014 (Capac) | 4,247 | 75.7% | 3,105 Mbps | 7.6 | B | 40/100 |
| 48063 (Columbus) | 4,151 | 20.1% | 1,103 Mbps | 5.3 | C- | 40/100 |
| 48064 (Casco) | 3,909 | 18.1% | 1,293 Mbps | 5.2 | C- | 47/100 |
| 48006 (Avoca) | 3,886 | 7.4% | 405 Mbps | 5.4 | D+ | 33/100 |
| 48027 (Goodells) | 3,185 | 64.1% | 1,368 Mbps | 5.2 | C | 51/100 |
| 48002 (Allenton) | 3,115 | 29.7% | 1,090 Mbps | 7.1 | C+ | 27/100 |
| 48022 (Emmett) | 2,585 | 46.0% | 1,970 Mbps | 6.7 | B- | 28/100 |
| 48032 (Jeddo) | 2,170 | 74.8% | 2,563 Mbps | 7.9 | B | 38/100 |
| 48028 (Harsens Island) | 917 | 0.0% | 1,231 Mbps | 5.5 | D+ | 45/100 |
Who is the Fastest Internet Provider in St. Clair County?
Based on both FCC data and unbiased customer ratings, the fastest internet in the county comes from XFINITY from Comcast.
Data Reported to FCC by ISPs: Average Maximum Available in St. Clair County
| Frontier Communications | 7,000 |
|---|---|
| AT&T | 5,000 |
| EarthLink | 5,000 |
| Mercury Broadband | 5,000 |
| XFINITY from Comcast | 2,000 |
| Air Advantage | 1,000 |
| Duke Broadband | 1,000 |
| Highline | 1,000 |
| Spectrum | 1,000 |
| Verizon | 300 |
| T-Mobile Home Internet | 100 |
| Viasat | 100 |
| Agri-Valley Communications | 100 |
| HughesNet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in St. Clair County. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for St. Clair County Internet Providers
Based on 229 reviews from Michigan internet customers, AT&T is the best internet service provider for St. Clair County residents. AT&T was rated at an average of 3.71 out of 5 in our report for overall customer satisfaction. XFINITY from Comcast wins for second-place in Michigan, with 4.00 out of 5 stars and 91.6% coverage in St. Clair County.
At a national level, based on 6737 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 St. Clair County Internet Providers
The table below shows average customer ratings from customers in St. Clair County, Michigan, and customers throughout the country.
| ISP / Tech Type | St. Clair County Overall | Michigan Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| AT&T | (2) | (28) | (1051) | View Plans | ||
| XFINITY | (1) | (117) | (2379) | View Plans | ||
| Agri-Valley Communications |  (0) | (1) | (1) | View Plans | ||
| Air Advantage | (0) | (1) | (1) | View Plans | ||
| Frontier | (0) |  (3) | (177) | View Plans | ||
| Highline | (0) |  (1) | (2) | View Plans | ||
| Mercury Broadband | (0) |  (1) | (4) | View Plans | ||
| Spectrum | (0) | (52) | (1949) | View Plans | ||
| T-Mobile Home Internet | (0) | (16) | (342) | View Plans | ||
| Verizon | (0) | (9) | (816) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans | ||
| Duke Broadband | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in St. Clair County
Based on data reported by St. Clair County ISPs to the FCC, the fastest speeds in the county are available through XFINITY from Comcast. The company offers speeds up to 2,000 Mbps in St. Clair County. Therefore, the average customer can get up to 1,517 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 XFINITY from Comcast. This indicates XFINITY reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | St. Clair County Speed | Michigan Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| XFINITY | (1) | (117) | (2379) | View Plans | ||
| Agri-Valley Communications | (0) | (1) | (1) | View Plans | ||
| Air Advantage | (0) | (1) | (1) | View Plans | ||
| Frontier | (0) | (3) | (177) | View Plans | ||
| Highline | (0) | (1) | (2) | View Plans | ||
| Mercury Broadband | (0) | (1) | (4) | View Plans | ||
| Spectrum | (0) | (52) | (1949) | View Plans | ||
| T-Mobile Home Internet | (0) | (16) | (342) | View Plans | ||
| Verizon | (0) | (9) | (816) | View Plans | ||
| AT&T | (2) | (28) | (1051) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| Duke Broadband | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in St. Clair County?
Of the providers in St. Clair County, customers rate AT&T the best for price. Data comes from customers rating their satisfaction with pricing: in St. Clair County where enough of them have reviewed a provider, otherwise across Michigan or the country. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
AT&T is rated 4.50 out of 5 for price, which is higher than the average across all internet providers in the country. T-Mobile Home Internet is rated second for affordability, with an average price rating of 4.13 out of 5.
The table below shows how customers in St. Clair County, Michigan, and the United States rated the affordability of their internet service.
Rated Affordability in St. Clair County
| ISP / Tech Type | St. Clair County Affordability | Michigan Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| AT&T |  (2) | (28) | (1051) | View Plans | ||
| Agri-Valley Communications | (0) | (1) | (1) | View Plans | ||
| Air Advantage | (0) | (1) | (1) | View Plans | ||
| Frontier | (0) | (3) | (177) | View Plans | ||
| Highline | (0) | (1) | (2) | View Plans | ||
| Mercury Broadband | (0) | (1) | (4) | View Plans | ||
| Spectrum | (0) | (52) | (1949) | View Plans | ||
| T-Mobile Home Internet | (0) | (16) | (342) | View Plans | ||
| Verizon | (0) | (9) | (816) | View Plans | ||
| XFINITY | (1) | (117) | (2379) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| Duke Broadband | (0) | (0) | (0) | View Plans |
Fiber, 5G, Cable and DSL Internet in St. Clair County
Which Fiber Internet Providers are Available in St. Clair County?
XFINITY Fiber in St. Clair County, MI
Availability:
11.6%
Customer Rating:
(300)
Avg. Download Speed
1,989 Mbps
XFINITY from Comcast offers Fiber service to 11.6% of St. Clair County homes. Across the county, XFINITY Fiber has speeds up to 1,989 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 2,000, with an average of 1,969 Mbps throughout the county. XFINITY Fiber is rated about the same as other types of internet service available in St. Clair County from XFINITY in terms of customer satisfaction.
EarthLink Fiber in St. Clair County, MI
Availability:
9.4%
Customer Rating:
(6)
Avg. Download Speed
4,863 Mbps
EarthLink offers Fiber service to 9.4% of St. Clair County homes. Across the county, EarthLink Fiber has speeds up to 4,863 Mbps, with speeds from 1,000 Mpbs up to 5,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for EarthLink Fiber. EarthLink Fiber is rated about the same as other types of internet service available in St. Clair County from EarthLink in terms of customer satisfaction.
AT&T Fiber in St. Clair County, MI
Availability:
9.4%
Customer Rating:
(542)
Avg. Download Speed
4,863 Mbps
AT&T offers Fiber service to 9.4% of St. Clair County homes. Across the county, AT&T Fiber has speeds up to 4,863 Mbps, with speeds from 1,000 Mpbs up to 5,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for AT&T Fiber. AT&T Fiber is rated lower than other types of internet service available in St. Clair County from AT&T in terms of customer satisfaction.
Mercury Broadband Fiber in St. Clair County, MI
Availability:
8.9%
Customer Rating:
(0)
Avg. Download Speed
5,000 Mbps
Mercury Broadband offers Fiber service to 8.9% of St. Clair County homes. Across the county, Mercury Broadband Fiber has speeds up to 5,000 Mbps
Duke Broadband Fiber in St. Clair County, MI
Availability:
5.6%
Customer Rating:
(0)
Avg. Download Speed
1,000 Mbps
Duke Broadband offers Fiber service to 5.6% of St. Clair County homes. Across the county, Duke Broadband Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
Frontier Fiber in St. Clair County, MI
Availability:
2.5%
Customer Rating:
(119)
Avg. Download Speed
7,000 Mbps
Frontier Communications offers Fiber service to 2.5% of St. Clair County homes. Across the county, Frontier Fiber has speeds up to 7,000 Mbps
Highline Fiber in St. Clair County, MI
Availability:
1.7%
Customer Rating:
(2)
Avg. Download Speed
1,000 Mbps
Highline offers Fiber service to 1.7% of St. Clair County homes. Across the county, Highline 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 St. Clair County?
T-Mobile Home Internet Fixed Wireless in St. Clair County, MI
Availability:
95.6%
Customer Rating:
(342)
Avg. Download Speed
66 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 95.6% of St. Clair 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 66 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.
Verizon Fixed Wireless in St. Clair County, MI
Availability:
86.4%
Customer Rating:
(362)
Avg. Download Speed
177 Mbps
Verizon offers Fixed Wireless service to 86.4% of St. Clair County homes. Across the county, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 177 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 14 Mbps throughout the county.
EarthLink Fixed Wireless in St. Clair County, MI
Availability:
69.5%
Customer Rating:
(4)
Avg. Download Speed
42 Mbps
EarthLink offers Fixed Wireless service to 69.5% of St. Clair County homes. Across the county, EarthLink Fixed Wireless has speeds up to 42 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 6.9 Mbps throughout the county.
AT&T Fixed Wireless in St. Clair County, MI
Availability:
69.5%
Customer Rating:
(205)
Avg. Download Speed
42 Mbps
AT&T offers Fixed Wireless service to 69.5% of St. Clair County homes. Across the county, AT&T Fixed Wireless has speeds up to 42 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 6.9 Mbps throughout the county.
Mercury Broadband Fixed Wireless in St. Clair County, MI
Availability:
20.5%
Customer Rating:
(4)
Avg. Download Speed
150 Mbps
Mercury Broadband offers Fixed Wireless service to 20.5% of St. Clair County homes. Across the county, Mercury Broadband Fixed Wireless has speeds up to 150 Mbps
Air Advantage Fixed Wireless in St. Clair County, MI
Availability:
12.5%
Customer Rating:
(1)
Avg. Download Speed
10 Mbps
Air Advantage offers Fixed Wireless service to 12.5% of St. Clair County homes. Across the county, Air Advantage Fixed Wireless is the only type of service available from the company, with speeds up to 10 Mbps
Agri-Valley Communications Fixed Wireless in St. Clair County, MI
Availability:
7.1%
Customer Rating:
(0)
Avg. Download Speed
30 Mbps
Agri-Valley Communications offers Fixed Wireless service to 7.1% of St. Clair County homes. Across the county, Agri-Valley Communications Fixed Wireless is the only type of service available from the company, with speeds up to 30 Mbps, with speeds from 10 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 20, with an average of 5.0 Mbps throughout the county.
Which Cable Internet Providers are Available in St. Clair County?
XFINITY Cable in St. Clair County, MI
Availability:
83.7%
Customer Rating:
(2077)
Avg. Download Speed
1,444 Mbps
XFINITY from Comcast offers Cable service to 83.7% of St. Clair County homes. Across the county, XFINITY Cable has speeds up to 1,444 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 101 Mbps throughout the county. XFINITY Cable is rated the same as other types of internet service available in St. Clair County from XFINITY in terms of customer satisfaction.
Spectrum Cable in St. Clair County, MI
Availability:
1.1%
Customer Rating:
(1739)
Avg. Download Speed
1,000 Mbps
Spectrum offers Cable service to 1.1% of St. Clair County homes. Across the county, Spectrum 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 St. Clair County?
EarthLink DSL in St. Clair County, MI
Availability:
60.7%
Customer Rating:
(5)
Avg. Download Speed
40 Mbps
EarthLink offers DSL service to 60.7% of St. Clair County homes. Across the county, EarthLink DSL has speeds up to 40 Mbps, with speeds from 10 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 20, with an average of 7.8 Mbps throughout the county. EarthLink DSL is rated higher than other types of internet service available in St. Clair County from EarthLink in terms of customer satisfaction.
AT&T DSL in St. Clair County, MI
Availability:
60.7%
Customer Rating:
(304)
Avg. Download Speed
40 Mbps
AT&T offers DSL service to 60.7% of St. Clair County homes. Across the county, AT&T DSL has speeds up to 40 Mbps, with speeds from 10 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 20, with an average of 7.8 Mbps throughout the county. AT&T DSL is rated about the same as other types of internet service available in St. Clair County from AT&T in terms of customer satisfaction.
Frontier DSL in St. Clair County, MI
Availability:
22.9%
Customer Rating:
(58)
Avg. Download Speed
39 Mbps
Frontier Communications offers DSL service to 22.9% of St. Clair County homes. Across the county, Frontier DSL has speeds up to 39 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 2.5 Mbps throughout the county. Frontier DSL is rated higher than other types of internet service available in St. Clair County from Frontier in terms of customer satisfaction.
Customer Reviews for Internet Service Providers in Michigan
Customer Reviews
A Michigan Customer
XFINITY Cable
September 17, 2025 A Algonac, MI Customer
AT&T Fixed Wireless
January 07, 2025 A Algonac, MI Customer
AT&T DSL
March 20, 2023 Overall I'm pretty happy with my provider though it goes out on occasion and the speed is only 25Mbps but its only $20 a month, in time they are converting to Fiber and I'm hoping it'll be in the near future
ISPReports User
Att Fixed Cellular
November 10, 2026 Does not work at all for anything do not get this wifi provider
Anthony Pupa
WOW! Cable
September 07, 2026 20 year customer with good service. A storm knocked out service to entire Detroit region for 3 days. Still out but they say there are no outages reported. 15 neighbors on Facebook say otherwise. Customer service will setup a tech in a few days. It is illogical to say the problem is in our homes and NOT get this looked at now. Time to research new provider.
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Which ISP Should You Choose in St. Clair 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 St. Clair County is AT&T.
- The fastest internet provider should be XFINITY from Comcast. 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 St. Clair County is AT&T.
- Viasat, T-Mobile Home Internet, and HughesNet has the broadest coverage in St. Clair County, available to 95.6% 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.