Linn County, IA Data Centers & Crypto Mining: Crypto Mining Rules (2026)
Key Facts
- Definition
- Crypto mining counts as a data center
- Zoning
- Requires EU-3 rezoning like any data center
- Setback
- 200 ft property line, 1,000 ft homes
- 2026 status
- New EU-3 applications paused to 2028
Summary
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.
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 commercial cryptocurrency mining operations and processing. Days means calendar days, unless otherwise specified. Day care center, preschool, means any facility operated for the purpose of providing care, protection and guidance to six or more individuals during only part of a 24-hour day. The term "day care center, preschool" includes nursery schools, preschools, day care centers for individuals, and other similar uses but excludes any facility offering care to individuals for a full 24-hour period. Degree of nonconformity means the degree of deviation of a particular nonconformity from uses or structures permitted within a zoning district. The principal use listed under a specific zoning district shall be interpreted to have the same degree of nonconformity for the purposes of this chapter. Density means the number of dwelling units or persons per gross acre of land. See also "Acreage, gross" and "Acreage, net."
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 16).
Full Breakdown
Sec. 107-180's definition of 'data center' folds in commercial cryptocurrency mining and processing, so the county has no separate crypto rule: mining rigs fall under the EU-3 Exclusive Use Three district standards in Sec. 107-151: board-approved rezoning, a major site plan, a 200-foot property-line setback, a 1,000-foot residential buffer, and the 55 dBA/65 dBC noise cap. As of August 2026 the board has paused new EU-3 rezoning applications through January 1, 2028, which would include new crypto-mining proposals.
Violations & Fines
Running an unpermitted mining operation as an unzoned use is a code violation; the zoning administrator can order it discontinued and refer the case for enforcement under Article VIII.
Frequently Asked Questions
Does Linn County have a separate ordinance for crypto mining?
Can I run a crypto mine from home in unincorporated Linn County?
Sources & Official References
Other rules in Linn County
Compare Linn County to another location·View the Iowa data centers & crypto mining overview
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