Southern Illinois Wireless Internet is a large internet service provider in the United States, serving 1 state or territory: Illinois. Learn more about 4SIWI's coverage and availability on this page.
Can I get Southern Illinois Wireless Internet internet in my area?
The easiest way to find out is to click the link below.
You may enter your zip code to check local availability or view the map below before contacting 4SIWI.
Southern Illinois Wireless Internet Availability Map
Any Internet Availability
On the map you can see 4SIWI's coverage area in the United States. Areas in green are most likely to have coverage, where some homes in yellow to red areas may not have coverage.
The table below shows coverage and average maximum speeds by state.
| State | Availaiblity | Average Best Speed |
|---|---|---|
| Illinois | 0.35% | 198 Mbps |
How fast is 4SIWI's internet?
Internet Download Speed
The map above shows average maximum speeds by area. Overall, 4SIWI internet speeds are adequate for most homes.
Download speeds (the speed at which you receive files and streaming video) range from 100 to 1,000 Mbps. The average customer has access to plans with download speeds up to 198 Mbps. This puts 4SIWI in the 32nd percentile versus other ISPs for download speeds, meaning speeds are somewhat slower than the average provider in the US.
Upload speeds (the speed you can send files and video to others) range from a low of 20 Mbps to a high of 1,000 Mbps. The average is 127 Mbps, placing 4SIWI in the 39th percentile for internet provider upload speeds, which is a little lacking for a modern household.
What broadband services does Southern Illinois Wireless Internet offer?
Across the country 4SIWI offers fixed wireless and fiber internet service. The table below shows which types of service 4SIWI offers and the average maximum speed for each service type. “Coverage” is the percent of 4SIWI customers who can get that type of service.
Technology |
Coverage |
Average Best Speed |
|---|---|---|
Fiber |
10.89% |
1,000 Mbps |
Fixed Wireless |
92.99% |
100 Mbps |
Where is Southern Illinois Wireless Internet Fiber Available?
Fiber Internet Speed
The 4SIWI fiber availability map shows where fiber has been made available to customers. If you can get fiber, it is usually the best option for most people due to fast speeds and low lag. Fiber is available within 10.89% of 4SIWI's coverage footprint, and the average speed for fiber is 1,000 Mbps download and 1,000 Mbps upload.
Where is 4SIWI Fixed Wireless Available?
Fixed Wireless Internet Speed Key
Fixed wireless The 4SIWI Fixed Wireless availability map shows where Fixed Wireless has been made available to customers. Fixed Wireless is available within 92.99% of Southern Illinois Wireless Internet's coverage footprint, and the average speed for Fixed Wireless is 100 Mbps down and 20 Mbps up.
Can I get 4SIWI TV Service?
Probably. Most fiber optic and cable companies are able to offer some kind of TV service. In either case, you can also get 4SIWI internet and satellite TV.
What cities and zips does Southern Illinois Wireless Internet serve?
With coverage in 61 cities and 31 zip codes, only the largest are listed below:
City |
Availability |
Average Best Speed |
|---|---|---|
| Marion, IL | 60.04% | 374 Mbps |
| West Frankfort, IL | 70.52% | 100 Mbps |
| Metropolis, IL | 35.02% | 100 Mbps |
| Johnston City, IL | 58.77% | 100 Mbps |
| Goreville, IL | 63.99% | 100 Mbps |
| Creal Springs, IL | 58.45% | 100 Mbps |
| Galatia, IL | 73.03% | 100 Mbps |
| Thompsonville, IL | 59.98% | 100 Mbps |
| Zeigler, IL | 80.84% | 100 Mbps |
| Vienna, IL | 35.48% | 100 Mbps |
| Pittsburg, IL | 46.54% | 100 Mbps |
| Crainville, IL | 58.06% | 100 Mbps |
| Herrin, IL | 4.16% | 871 Mbps |
| Brookport, IL | 31.55% | 100 Mbps |
| Mulkeytown, IL | 34.97% | 100 Mbps |
| Orient, IL | 91.09% | 100 Mbps |
| Hanaford, IL | 100.00% | 100 Mbps |
| Ozark, IL | 34.36% | 100 Mbps |
| Tunnel Hill, IL | 63.56% | 100 Mbps |
| Spillertown, IL | 60.71% | 100 Mbps |
| Carbondale, IL | 0.96% | 100 Mbps |
| Benton, IL | 2.33% | 100 Mbps |
| Karnak, IL | 26.80% | 100 Mbps |
| Shady Grove, IL | 36.07% | 100 Mbps |
| Kegley, IL | 55.08% | 100 Mbps |
| Harco, IL | 43.62% | 100 Mbps |
| Round Knob, IL | 56.25% | 100 Mbps |
| New Burnside, IL | 44.09% | 100 Mbps |
| New Liberty, IL | 94.41% | 100 Mbps |
| Energy, IL | 11.19% | 1,000 Mbps |
| New Columbia, IL | 85.14% | 100 Mbps |
| Plumfield, IL | 89.06% | 100 Mbps |
| New Dennison, IL | 47.26% | 100 Mbps |
| Hudgens, IL | 5.66% | 100 Mbps |
| Carterville, IL | 1.45% | 902 Mbps |
| Hillerman, IL | 72.97% | 100 Mbps |
| Joppa, IL | 16.23% | 100 Mbps |
| Boles, IL | 87.50% | 100 Mbps |
| Royalton, IL | 5.89% | 100 Mbps |
| Shakerag, IL | 40.60% | 100 Mbps |
| Grantsburg, IL | 24.02% | 100 Mbps |
| West End, IL | 41.99% | 100 Mbps |
| Mermet, IL | 91.67% | 100 Mbps |
| Reevesville, IL | 44.85% | 100 Mbps |
| Makanda, IL | 2.31% | 100 Mbps |
| Belknap, IL | 21.35% | 100 Mbps |
| Stonefort, IL | 6.63% | 100 Mbps |
| Parker, IL | 63.22% | 100 Mbps |
| Logan, IL | 37.67% | 100 Mbps |
| Parrish, IL | 44.55% | 100 Mbps |
| Harrisburg, IL | 0.42% | 100 Mbps |
| Whiteash, IL | 5.43% | 100 Mbps |
| Paulton, IL | 71.79% | 100 Mbps |
| Macedonia, IL | 2.91% | 100 Mbps |
| Temple Hill, IL | 11.56% | 100 Mbps |
| Long Branch, IL | 15.60% | 100 Mbps |
| Grinnell, IL | 84.62% | 100 Mbps |
| Freeman Spur, IL | 5.19% | 100 Mbps |
| Old Du Quoin, IL | 4.27% | 100 Mbps |
| Rosebud, IL | 9.88% | 100 Mbps |
| Ewing, IL | 0.16% | 100 Mbps |
Zip |
Availability |
Average Best Speed |
| 62959, IL | 54.27% | 364 Mbps |
| 62896, IL | 70.24% | 100 Mbps |
| 62960, IL | 35.88% | 100 Mbps |
| 62951, IL | 59.33% | 100 Mbps |
| 62939, IL | 59.95% | 100 Mbps |
| 62922, IL | 54.95% | 100 Mbps |
| 62935, IL | 71.15% | 100 Mbps |
| 62890, IL | 50.71% | 100 Mbps |
| 62999, IL | 80.76% | 100 Mbps |
| 62995, IL | 20.59% | 100 Mbps |
| 62918, IL | 8.72% | 181 Mbps |
| 62910, IL | 34.47% | 100 Mbps |
| 62974, IL | 46.88% | 100 Mbps |
| 62865, IL | 28.83% | 100 Mbps |
| 62972, IL | 41.99% | 100 Mbps |
| 62948, IL | 3.58% | 1,000 Mbps |
| 62874, IL | 100.00% | 100 Mbps |
| 62856, IL | 100.00% | 100 Mbps |
| 62812, IL | 2.81% | 100 Mbps |
| 62956, IL | 35.07% | 100 Mbps |
| 62902, IL | 6.23% | 100 Mbps |
| 62943, IL | 33.09% | 100 Mbps |
| 62908, IL | 43.72% | 100 Mbps |
| 62946, IL | 1.45% | 100 Mbps |
| 62967, IL | 51.60% | 100 Mbps |
| 62958, IL | 4.87% | 100 Mbps |
| 62860, IL | 7.03% | 100 Mbps |
| 62983, IL | 1.69% | 100 Mbps |
| 62987, IL | 1.55% | 100 Mbps |
| 62941, IL | 1.85% | 100 Mbps |
| 62938, IL | 0.23% | 100 Mbps |