Black Diamond Internet Providers
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    Internet Providers in Black Diamond

    Black Diamond has two fiber providers, Quantum Fiber and CenturyLink. Download speeds as fast as 2,000 Mbps are available in parts of Black Diamond.

    Fiber

    Provider DownDownload (Mbps) UpUpload (Mbps) AvailabilityCoverage
    Quantum Fiber 2,000 1,000 17%
    CenturyLink 1,000 1,000 12%

    Cable

    Provider DownDownload (Mbps) UpUpload (Mbps) AvailabilityCoverage
    Xfinity 2,000 250 98%

    DSL

    Provider DownDownload (Mbps) UpUpload (Mbps) AvailabilityCoverage
    CenturyLink 140 20 89%

    Fixed Wireless

    Provider DownDownload (Mbps) UpUpload (Mbps) AvailabilityCoverage
    Verizon 300 20 100%
    Skynet 100 100 100%
    T-Mobile 100 20 97%
    AT&T 100 20 51%

    Next-Gen Satellite

    Provider DownDownload (Mbps) UpUpload (Mbps) AvailabilityCoverage
    Starlink 280 30 100%

    Old-School Satellite

    Provider DownDownload (Mbps) UpUpload (Mbps) AvailabilityCoverage
    Viasat 100 3 100%
    HughesNet 50 5 100%

    Broadband Map's availability estimates are based on the census boundaries of Black Diamond. Speed metrics capture internet providers' maximum advertised speeds. Both may be overoptimistic.

    Data Sourcing

    Broadband Map's listings of internet providers in Black Diamond rely primarily on the May 2026 release from the FCC's Broadband Data Collection program (representing Black Diamond ISPs' availability as of December 2025).