Best Internet Providers in Castalia, IA
All 7 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Castalia, IA
Castalia has 7 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. 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 3 available internet technologies in Castalia.
Ranks compare Castalia with the 31,388 US places under 1,000 people, the tiers of our fastest-cities rankings.
The Best Internet in Castalia, IA at a Glance
Castalia Internet Providers, Ranked by Coverage, Speed and Customer Ratings
AcenTek
Connection
Customer Rating
Fiber
GigFire
Connection
Customer Rating
Fixed Wireless
Nextlink
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 Castalia ratings may vary and are shown below.
Who is the Best Internet Provider in Castalia, IA?
T-Mobile Home Internet is the best internet provider in Castalia based on Iowa 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 Castalia, making it a solid recommendation among providers with reviews. T-Mobile Home Internet is an option for 68.78% 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 Castalia?
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 Castalia
How Castalia Compares to Places Its Size
Castalia's report card score is in the top 36% and its connectivity index is in the top 35%.
| Measure | Castalia | Rank among US places under 1,000 people | Winneshiek County | Iowa | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 98.6% | top 27% | 47.4% | 84.3% | 71.5% | 6,946 places at 100.0% |
| Average top speed | 988 Mbps | bottom 41% | 930 Mbps | 3,256 Mbps | 3,486 Mbps | Fairmount, TN and Falling Water, TN and 5 more (25,000 Mbps) |
| Providers at a typical address | 3.9 | bottom 46% | 4.3 | 6.8 | 7.1 | Los Prados, PR (15.1) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.5 | top 40% | 2.2 | 2.4 | 2.7 | Paguate, NM (13.4) |
| Workers who work from home | 12% | top 31% | 13% | 12% | 15% | Boys Town, NE (100%) |
| Homes with a computer, tablet or phone | 92% | bottom 46% | 93% | 95% | 96% | 1,494 places at 100% |
| Homes with internet | 92% | top 20% | 89% | 89% | 91% | 370 places at 100% |
| Homes on fiber, cable or DSL | 61% | top 43% | 64% | 72% | 76% | 23 places at 100% |
| More about the households here | ||||||
| Homes with a desktop or laptop | 73% | top 47% | 77% | 78% | 81% | 72 places at 100% |
| Median household income | $76,083 | top 39% | $82,922 | $82,468 | $93,246 | 22 places at $250,001 |
| Residents in school (6th grade to college) | 9% | bottom 29% | 18% | 16% | 16% | University at Buffalo, NY (100%) |
Fiber reaches 98.6% of homes in Castalia, against 47.4% across Winneshiek County and 84.3% across Iowa. Households in Castalia are smaller than the US average (2.5 people against 2.7); 12% of workers work from home (US 15%); and the median household income is $76,083 (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 Castalia
Which Fiber Internet Providers are Available in Castalia?
AcenTek Fiber in Castalia, IA
Availability:
82.4%
Customer Rating:
(1)
Avg. Download Speed
1,000 Mbps
AcenTek offers Fiber service to 82.4% of Castalia homes. Across the city, AcenTek Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
NEIT Fiber in Castalia, IA
Availability:
20.8%
Customer Rating:
(0)
Avg. Download Speed
1,000 Mbps
NEIT offers Fiber service to 20.8% of Castalia homes. Across the city, NEIT 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 Castalia?
GigFire Fixed Wireless in Castalia, IA
Availability:
96.4%
Customer Rating:
(1)
Avg. Download Speed
146 Mbps
GigFire offers Fixed Wireless service to 96.4% of Castalia homes. Across the city, GigFire Fixed Wireless is the only type of service available from the company, with speeds up to 146 Mbps, with speeds from 100 Mpbs up to 150 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 20 and as high as 130, with an average of 122 Mbps throughout the city.
Nextlink Fixed Wireless in Castalia, IA
Availability:
71.6%
Customer Rating:
(14)
Avg. Download Speed
507 Mbps
Nextlink offers Fixed Wireless service to 71.6% of Castalia homes. Across the city, Nextlink Fixed Wireless is the only type of service available from the company, with speeds up to 507 Mbps, with speeds from 400 Mpbs up to 1,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 100 and as high as 1,000, with an average of 127 Mbps throughout the city.
T-Mobile Home Internet Fixed Wireless in Castalia, IA
Availability:
68.8%
Customer Rating:
(342)
Avg. Download Speed
34 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 68.8% of Castalia homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 34 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 5.0 Mbps throughout the city.
Allamakee-Clayton Electric Cooperative Fixed Wireless in Castalia, IA
Availability:
28.1%
Customer Rating:
(0)
Avg. Download Speed
25 Mbps
Allamakee-Clayton Electric Cooperative offers Fixed Wireless service to 28.1% of Castalia homes. Across the city, Allamakee-Clayton Electric Cooperative Fixed Wireless is the only type of service available from the company, with speeds up to 25 Mbps
Which Cable Internet Providers are Available in Castalia?
According to the most recently submitted data by internet service providers to the FCC, there are currently no cable providers available in Castalia, IA.
Which DSL Internet Providers are Available in Castalia?
CenturyLink DSL in Castalia, IA
Availability:
24.7%
Customer Rating:
(120)
Avg. Download Speed
62 Mbps
CenturyLink offers DSL service to 24.7% of Castalia homes. Across the city, CenturyLink DSL is the only type of service available from the company, with speeds up to 62 Mbps, with speeds from 10 Mpbs up to 80 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 10, with an average of 7.5 Mbps throughout the city.
Internet in Castalia by Neighborhood and ZIP Code
Castalia has 1 ZIP code with its own page. Each row links to that place’s page.
Neighborhoods in Castalia
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
ZIP codes in Castalia
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 52133 | 493 | 99.2% | 992 Mbps | 3.5 | C+ | 44/100 |
How Castalia Compares to Nearby Places
The 10 places nearest to Castalia that have their own pages are all within 13 miles. Among them, Ossian has the most homes with fiber (100.0%) and Calmar the fewest (95.0%); Castalia has 98.6%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Castalia (this page) | 663 | 98.6% | 988 Mbps | 3.9 | C+ | 48/100 |
| Postville | 2,875 | 99.7% | 999 Mbps | 4.9 | B- | 47/100 |
| Calmar | 1,416 | 95.0% | 971 Mbps | 6.1 | B- | 54/100 |
| Ossian | 1,314 | 100.0% | 1,000 Mbps | 4.2 | B- | 51/100 |
| Elgin | 1,101 | 99.7% | 906 Mbps | 2.9 | C | 38/100 |
| Luana | 1,046 | 100.0% | 1,000 Mbps | 4.1 | C+ | 54/100 |
| Clermont | 978 | 99.7% | 1,000 Mbps | 2.9 | C+ | 39/100 |
| Ludlow | 633 | 100.0% | 1,000 Mbps | 5.3 | B- | 34/100 |
| Gunder | 349 | 100.0% | 868 Mbps | 2.9 | C | 52/100 |
| Nordness | 311 | 81.0% | 909 Mbps | 4.9 | C | 54/100 |
| Festina | 117 | 100.0% | 1,000 Mbps | 4 | C+ | 63/100 |
Who is the Fastest Internet Provider in Castalia?
According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by T-Mobile Home Internet. On the other hand, based on data provided by the internet providers to the FCC, AcenTek 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 Castalia
| AcenTek | 1,000 |
|---|---|
| Nextlink | 1,000 |
| NEIT | 1,000 |
| GigFire | 150 |
| Viasat | 100 |
| T-Mobile Home Internet | 100 |
| CenturyLink | 80 |
| HughesNet | 25 |
| Allamakee-Clayton Electric Cooperative | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Castalia. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Castalia Internet Providers
Based on 16 reviews from Iowa internet customers, T-Mobile Home Internet is the best internet service provider for Castalia residents. T-Mobile Home Internet was rated at an average of 4.40 out of 5 in our report for overall customer satisfaction. Nextlink wins for second-place in Iowa, with 2.00 out of 5 stars and 71.6% coverage in Castalia.
At a national level, based on 546 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 Castalia Internet Providers
The table below shows average customer ratings from customers in Castalia, Iowa, and customers throughout the country.
| ISP / Tech Type | Castalia Overall | Iowa Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) |  (5) | (342) | View Plans | ||
| Nextlink | (0) |  (1) | (19) | View Plans | ||
| CenturyLink | (0) |  (10) | (183) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| AcenTek | (0) | (0) | (1) | View Plans | ||
| GigFire | (0) | (0) | (1) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans | ||
| Allamakee-Clayton Electric Cooperative | (0) | (0) | (0) | View Plans | ||
| NEIT | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in Castalia
Based on data reported by Castalia ISPs to the FCC, the fastest speeds in the city are available through AcenTek. The company offers speeds up to 1,000 Mbps in Castalia. 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 T-Mobile Home Internet. This indicates T-Mobile Home Internet reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Castalia Speed | Iowa Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (5) | (342) | View Plans | ||
| Nextlink | (0) |  (1) | (19) | View Plans | ||
| CenturyLink | (0) | (10) | (183) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| AcenTek | (0) | (0) | (1) | View Plans | ||
| GigFire | (0) | (0) | (1) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| Allamakee-Clayton Electric Cooperative | (0) | (0) | (0) | View Plans | ||
| NEIT | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in Castalia?
Of the providers in Castalia, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Castalia where enough of them have reviewed a provider, otherwise across Iowa 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. Nextlink is rated second for affordability, with an average price rating of 2.00 out of 5.
The table below shows how customers in Castalia, Iowa, and the United States rated the affordability of their internet service.
Rated Affordability in Castalia
| ISP / Tech Type | Castalia Affordability | Iowa Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (5) | (342) | View Plans | ||
| Nextlink | (0) | (1) | (19) | View Plans | ||
| CenturyLink | (0) | (10) | (183) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| GigFire | (0) | (0) | (1) | View Plans | ||
| AcenTek | (0) | (0) | (1) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| Allamakee-Clayton Electric Cooperative | (0) | (0) | (0) | View Plans | ||
| NEIT | (0) | (0) | (0) | View Plans |
Customer Reviews for Internet Service Providers in Iowa
Customer Reviews
Steve S.
ImOn Communications Fiber
November 04, 2026 Install was sloppy, wire hanging inside and outside. My main issue was the price kept increasing. The customer support took over a hour to speak to someone and then another hour of testing before they would isue replacement equipment.
ISPReports User
Metronet Fiber
October 14, 2026 great
Tim W
ImOn Communications Fiber
October 08, 2026 Poor signal strength intermittent speeds and I need the signal I pay for
Diane
Comelec Internet Services
September 01, 2026 Great so far. Brian Evans did a great job. Give him a 5
ISPReports User
Partner Communications Cooperative Fiber
July 01, 2026 awful. the key advantage of fiber technology is symmetrical upload and download speeds - fiber optic with pcctel is unreliable and awful. rarely have had symmetrical speeds with this service do NOT recommend pcctel
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Which ISP Should You Choose in Castalia?
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 Castalia is T-Mobile Home Internet.
- The fastest internet provider should be AcenTek. Considering speed for the money and reliability in speeds, T-Mobile Home Internet may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Castalia is T-Mobile Home Internet.
- Viasat, HughesNet, and GigFire has the broadest coverage in Castalia, available to 96.4% 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.