FCC coverage data · December 2024 filing
Residential internet in Concord, CA
Contra Costa County · Checking providers reported in ZIP 94521
Internet providers in Concord, CA (ZIP 94521)
There are 13 residential internet providers filed for Concord, CA (ZIP 94521), including Sonic, AT&T Fiber, Xfinity. Each row shows the technology, the fastest advertised speeds and how much of the ZIP the provider reports covering, from the FCC Broadband Data Collection (December 2024).
| Provider | Technology | Max filed download | Max filed upload | ZIP coverage |
|---|---|---|---|---|
| Sonic | Fiber | 10 Gbps | 10 Gbps | 11% |
| AT&T Fiber | Fiber | 5 Gbps | 5 Gbps | 16% |
| Xfinity | Cable | 2 Gbps | 250 Mbps | 96% |
| Astound | Cable | 1.5 Gbps | 50 Mbps | 96% |
| Unwired | 5G Home Internet | 300 Mbps | 25 Mbps | 94% |
| Verizon 5G Home | 5G Home Internet | 300 Mbps | 30 Mbps | 69% |
| T-Mobile Home Internet | 5G Home Internet | 100 Mbps | 20 Mbps | 97% |
| AT&T Internet Air | 5G Home Internet | 100 Mbps | 20 Mbps | 84% |
| Starlink | Satellite | 280 Mbps | 30 Mbps | 100% |
| Viasat | Satellite | 150 Mbps | 3 Mbps | 100% |
| HughesNet | Satellite | 100 Mbps | 5 Mbps | 100% |
| Astound | DSL | 1 Gbps | 10 Mbps | 4% |
| AT&T Internet | DSL | 100 Mbps | 20 Mbps | 81% |
Provider results
* Starting prices and promotions are indicative national offers for select major providers, last reviewed September 2026. Actual pricing varies by address, plan and promotion and changes often; most intro rates require autopay and paperless billing and exclude taxes, fees and equipment. Confirm current pricing directly with the provider before ordering. Coverage: FCC Broadband Data Collection (December 2024). See our Disclaimer.
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