Auditor

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Cerro Gordo County Voter Registration

Updated August 1, 2025

No Party
11,220
Republican
10,005
Democratic
7,898
Other
244

Total Registered Voters: 29,367

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Auditor

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County Courthouse

220 N. Washington Ave.
Mason City, IA 50401
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Courthouse Hours

M-F 8:00 a.m. to 4:30 p.m.
Closed Holidays
Department Hours May Vary
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