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.


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investigationsThe Lyon County Sheriff’s Office Investigative Division is made up of one Investigator who investigates major crimes such as sexual assaults, burglaries, child abuse, physical assaults, homicide, financial and internet crimes, as well as assisting the patrol deputies when necessary.

The Investigator follows up on reports taken by patrol deputies. This division receives reports from Family Services and the Lyon County Attorney’s Office, and handle assignments directed by the Sheriff, or Sergeants. This division can also assist in investigating crime scenes with photographs, fingerprints, and other forensic evidence.

Cases that are sent to the Investigative Division by patrol deputies are reviewed by the Investigator and followed up on appropriately. If there are no leads, the case is filed as inactive. If there is additional information that surfaces the case can be reopened and investigated at such time.

The Investigative Division is also in charge of undercover operations such as alcohol and tobacco stings and drug sale crimes. All background checks for hiring within the department are handled by the Investigative Division. The Investigative Division also assists with internal investigations for other agencies.

If anyone is interested in leaving information on a crime that has been committed, they are encouraged to call: (507) 537-7666 Ext. 6604 or e-mail at