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Local votes and rules
📜 Data center rules · Unincorporated Johnson County
Johnson County is drafting one of the strictest data center ordinances in eastern Iowa. Data centers would need a water study, could go only in set areas (commercial and industrial zones, or as a conditional use on farm land), and may have to use closed-loop cooling. Staff want it done before the pause ends November 8.
July 22, 2026Source
⏸️ Pause on new data centers · Unincorporated Johnson County
Supervisors passed a one-year pause on rezonings, site plans and building permits for data centers in the countryside. Iowa City, North Liberty and Coralville are not covered. It ends November 8, 2026. The county is using the time to write rules on where data centers can go and on power and water use.
Nov 6, 2025Source
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In Iowa, cities and towns decide inside their limits. Outside them, the county decides.