Internet Providers in O'Fallon, Missouri
15 providers report residential internet coverage in St. Charles County (the O'Fallon area). Fiber reaches 78% of census blocks. Coverage below is county-level from federal filings updated — your exact address may differ, so use the address checker.
| Provider | Types | Top speed | Area coverage | |
|---|---|---|---|---|
| Spectrum | Cable, Fiber | 1 Gbps | 87% of blocks | Visit site |
| AT&T | DSL, Fiber, Fixed Wireless | 5 Gbps | 79% of blocks | Visit site |
| Verizon | Fixed Wireless | 1 Gbps | 79% of blocks | Visit site |
| T-Mobile | Fixed Wireless | 100 Mbps | 70% of blocks | Visit site |
| Brown Dog Networks | Fixed Wireless | 50 Mbps | 55% of blocks | |
| Wisper ISP, LLC | Fixed Wireless, 5G Home Internet | 400 Mbps | 44% of blocks | |
| Gateway Fiber | Fiber | 2 Gbps | 26% of blocks | |
| Brightspeed | DSL, Fiber, Fixed Wireless | 2 Gbps | 23% of blocks | Visit site |
| i3 Broadband | Fiber | 8 Gbps | 21% of blocks | |
| Cable America | Cable | 1 Gbps | 2% of blocks | |
| Rally Networks | DSL | 25 Mbps | 1% of blocks | |
| BlueBit Networks | Fixed Wireless | 10 Mbps | 1% of blocks | |
| Socket Telecom LLC | Fiber | 2.5 Gbps | 1% of blocks | |
| Optimum | Cable | 940 Mbps | 1% of blocks | Visit site |
| Systec Wireless Communications | Fixed Wireless | 100 Mbps | 1% of blocks |
Frequently asked questions
What's the fastest internet in O'Fallon?
i3 Broadband reports the highest maximum download speed in St. Charles County at 8 Gbps. Actual availability varies block by block — check your address above.
Is fiber available in O'Fallon?
Fiber reaches about 78% of census blocks in St. Charles County. The largest fiber footprints belong to Spectrum, AT&T, Gateway Fiber. Fiber build-out is street-by-street, so neighboring addresses can differ.
How do I find what's actually at MY address?
Use the address checker on our homepage — it matches your address against the federal coverage database and lists every provider reporting service at your census block, free and without giving anyone your phone number.