Broadband Map's availability estimates are based on the census boundaries
of McHenry. Speed metrics capture internet providers' maximum advertised speeds. Both may be overoptimistic.
Data Sourcing
Broadband Map's listings of business internet providers in McHenry rely primarily on the November 2025 release from the FCC's Broadband Data Collection program (representing McHenry ISPs' availability as of June 2025).
