Data Centers & Crypto Mining in Linn County, IA (2026)
3 rules for unincorporated Linn County, Iowa.
Verified from official government sources
Data Center Zoning & Siting
Large-scale data centers in unincorporated Linn County must rezone into the EU-3 district, file a major site plan, and meet a 200-foot property-line setback plus a 1,000-foot residential buffer under Sec. 107-151.
Linn County Data Center Zoning Rules
Significant RestrictionsLinn County Code § 107-151(d), (f)(1)-(2)
(d)Major site plan required. A major site plan shall be submitted and reviewed prior to the approval of a large-scale data center. A large-scale data center shall require rezoning to the EU-3 zoning district, unless already located within such EU-3 zoning district. ... (f)Required setbacks. (1)200 feet to property lines. (2)1,000 feet (measured from the closest outer wall of the closest buildin...
Data Center Noise Limits
Data center equipment in Linn County's EU-3 district is capped at 55 dBA/65 dBC near homes and 65 dBA/75 dBC elsewhere, with testing and construction noise limited to weekday daytime hours under Sec. 107-151(l).
Linn County Data Center Noise Limits
Some RestrictionsLinn County Code § 107-151(l)(1)-(2)
(l)Noise analysis. No operating data center equipment shall produce decibel levels exceeding any of the following limitations, with the exception of initial construction and routine maintenance. Adequate setbacks and effective sound mitigating equipment shall be used to comply with these limitations: (1)The average hourly noise level shall not exceed 55 dBA or 65 dBC as measured from the outer...
Crypto Mining Rules
Linn County's code defines commercial cryptocurrency mining as a data center use, so a mining operation must clear the same EU-3 rezoning, site plan, setback, and noise rules as any other large-scale data center.
Linn County Crypto Mining Rules
Significant RestrictionsLinn County Code § 107-180 (definition of "Data center")
Data center means a facility consisting of one or more buildings (whether constructed simultaneously or in separate phases) used primarily for the storage, management, processing, and transmission of digital data, which houses computer or network equipment, systems, servers, appliances, and other associated components related to digital data storage and operations. Data center includes commerci...
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