Coverage · ZIP 21104
Internet Providers in Marriottsville, MD (21104)
There are 12 internet providers available in Marriottsville, MD (ZIP 21104), including Antietam Cable, Xfinity Fiber, Verizon Fios. Compare each provider below by technology, maximum advertised speed, and area coverage, then call (833) 261-0564 for help choosing a plan. Coverage data is sourced from the FCC National Broadband Map.
Internet providers in Marriottsville, MD (ZIP 21104)
There are 12 residential internet providers available in Marriottsville, MD (ZIP 21104), including Antietam Cable, Xfinity Fiber, Verizon Fios. The table below lists each provider with its technology type, maximum advertised speeds, and area coverage, sourced from the FCC National Broadband Map.
| Provider | Technology | Max download | Max upload | Area coverage |
|---|---|---|---|---|
| Antietam Cable | Fiber | 5 Gbps | 5 Gbps | 16% |
| Xfinity Fiber | Fiber | 3 Gbps | 3 Gbps | 5% |
| Verizon Fios | Fiber | 940 Mbps | 880 Mbps | 48% |
| Quantum Internet & Telephone | Fiber | 100 Mbps | 100 Mbps | 2% |
| Xfinity | Cable | 2 Gbps | 250 Mbps | 72% |
| Verizon 5G Home | 5G Home Internet | 300 Mbps | 30 Mbps | 44% |
| AT&T Internet Air | 5G Home Internet | 100 Mbps | 20 Mbps | 73% |
| T-Mobile Home Internet | 5G Home Internet | 100 Mbps | 20 Mbps | 63% |
| Believe Broadband | Fixed Wireless | 10 Mbps | 1 Mbps | 20% |
| Starlink | Satellite | 280 Mbps | 30 Mbps | 100% |
| Viasat | Satellite | 150 Mbps | 3 Mbps | 100% |
| HughesNet | Satellite | 100 Mbps | 5 Mbps | 100% |
Internet in Marriottsville, MD — common questions
How many internet providers are available in Marriottsville, MD?
There are 12 internet providers available in Marriottsville, MD (ZIP 21104), including Antietam Cable, Xfinity Fiber, Verizon Fios. Availability varies by exact address.
What is the fastest internet available in 21104?
Antietam Cable offers the highest advertised download speed in Marriottsville, MD at up to 5 Gbps. Actual speeds depend on the plan and your address.
How do I check internet availability at my address in Marriottsville, MD?
Enter your ZIP code on Ziatan to see every provider serving your block, then call (833) 261-0564 for help comparing plans and pricing — free, with no signup required.