Data Centers & Crypto Mining in Colusa County, CA (2026)

3 rules for unincorporated Colusa County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Colusa County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Data Center Zoning & Siting

Colusa County has no dedicated data-center ordinance. In unincorporated areas a server facility is an industrial use, permitted by right in the M-1, M-2, and Research and Development (RD) zones and subject to CEQA and industrial performance standards. Colusa and Williams set their own zoning.

Colusa County Data Center Zoning (M-1, M-2, RD)

Light Restrictions

Colusa County Code, Zoning Code Section 44-2.50.20(b) (Development Standards in the Industrial Zones)

Projects that cannot meet the following performance standards shall be elevated to a minor use permit or use permit.

Full ordinance details →Official source ↗

Data Center Noise Limits

Colusa County caps noise at 50 dBA at night and 55 dBA daytime at the nearest home's property line under its noise ordinance (Chapter 13, Ord. No. 730). A data center's cooling systems and generators must meet these limits, plus a 60 dB zoning cap at adjacent non-industrial property lines.

Colusa County Data Center Noise Limits (50-60 dBA)

Some Restrictions

Colusa County Code Section 13-6(a) (Ord. No. 730, section 13.20.010), Noise Regulations - General restrictions - Noise limits

No person shall produce, suffer, or allow to be produced on any public or private property sounds at a level in excess of those enumerated in Table No. 1, when measured at its property plane of the nearest property.

Full ordinance details →Official source ↗

Crypto Mining Rules

Colusa County has no ordinance specific to cryptocurrency or blockchain mining. A commercial mining operation is treated as a data center or industrial use, permitted by right in the M-1, M-2, or RD zones and subject to the same Zoning Code, CEQA review, and Chapter 13 noise limits.

Colusa County Has No Crypto Mining Ordinance

Few Restrictions

Colusa County Code, Zoning Code Section 44-0.10 (Definitions)

If a word is not defined in this article or in other provisions of the zoning code, the director shall determine the appropriate definition.

Full ordinance details →Official source ↗

All Colusa County ordinances

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