Data Centers & Crypto Mining in Humboldt County, CA (2026)
2 rules for unincorporated Humboldt County, California.
Verified from official government sources
Data Center Zoning & Siting
Humboldt County has no dedicated data center ordinance. In the unincorporated county a data center is an industrial use for the ML, MG, or MH districts, needing a Use Permit, CEQA review, and, in the coastal zone, a Coastal Development Permit.
Humboldt County Data Center Zoning (ML, MG, MH Industrial)
Significant RestrictionsHumboldt County Code, Title III, Division 1, Chapter 314 (Regulations Outside the Coastal Zone), Section 314-3.2 (ML Limited Industrial Zone)
The Limited Industrial or ML Zone is intended to apply to areas in which light manufacturing and heavy commercial uses of the non-nuisance type and large administrative facilities are permitted.
Data Center Noise Limits
Humboldt County has no data-center or standalone noise ordinance. A facility's cooling and generators are held to the General Plan Noise Element short-term standards (Policy N-S7): 65 dBA by day and 60 dBA at night at a residential property line, applied through CEQA and Use Permit conditions.
Humboldt County Data Center Noise Limits (General Plan Noise Element)
Significant RestrictionsHumboldt County General Plan, Part 4, Chapter 13 (Noise Element), Policy N-S7 (Short-term Noise Performance Standards / Lmax), adopted October 23, 2017
The following noise standards, unless otherwise specifically indicated, shall apply to all property within their assigned noise zones and such standards shall constitute the maximum permissible noise level within the respective zones.
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