NOTICE - Updated 4/9/2020

Due to the continued health concerns raised by the COVID-19 virus the Lyon County Government Center, Public Works and the landfill will be closed to the public until further notice.  
Auditor/Treasurer - 507-537-6724
Driver’s License - 507-537-6727
Recorder, Birth, Death, Marriage - 507-537-6722
Assessor - 507-537-6731
Court Administration - 507-537-6734
Probation - 507-537-6746
Veteran’s Services - 507-537-6729
Human Resources, Administration - 507-537-6961
Passports - 507-532-1339
Environmental (including Household Hazardous Waste and mattress recycling)   - 507-532-8210
Landfill - 507-865-4615
Lyon County Soil & Water Conservation District - 507-532-8207 Ext. 3
Highway - 507-532-8205
Residents may also contact county staff by email. Email addresses are listed on the county website at We apologize for any inconvenience that that this may cause, and we thank you for your understanding.  These precautions are necessary to ensure the safety of our employees and to slow the spread of the virus.  For more information about COVID-19 and how to prevent the spread of the virus, please visit or
Further updates will be posted to our website and Facebook page as they become available.

All Hazard Mitigation Plan

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The purpose of the Lyon County All Hazard Mitigation Plan (AHMP) is to determine how to reduce property damage and loss of life resulting from natural and manmade hazards. The Lyon County AHMP includes resources and information to assist county residents, public and private sector organizations, and others interested in participating in planning for both natural and manmade hazards. This mitigation plan identifies hazards that pose a threat to Lyon County, as well as what is currently being done to mitigate their impacts. The plan also provides a list of actions and programs that may enable Lyon County to further reduce negative impacts caused by disasters. The implementation strategies address both natural and manmade hazards that include but are not limited to flooding, drought, severe summer and winter storms, fires, and tornadoes.

Lyon County AHMP Final for Review