Lyon County

Lyon County Courthouse
206 South 2nd Avenue
Rock Rapids, IA 51246
Hours: 8:00 am - 4:30 pm
Supervisor Meetings: 2nd and 4th Tuesday of each month
Website: https://lyoncounty.iowa.gov/

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Name Office Address City State Zip Code Phone Number Fax Number Party
Name Office Address City State Zip Code Phone Number Fax Number Party
Ashley Lewis Assessor 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8550 (712) 472-8551
Amy Sprock Auditor 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8517 (712) 472-2829 R
Justin Smith Conservation 1651 180th St Inwood IA 51240 (712) 753-2033 (712) 472-2214
Nolan McGowan County Attorney 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8545 (712) 472-3780 D
Arden Kopischke Emergency Management 410 S Boone Rock Rapids IA 51246 (712) 472-8300 (712) 472-2303
Daryl Albertson Engineer/Secondary Roads 1305 Forster Ave Rock Rapids IA 51246 (712) 472-8230 (712) 472-3993
Sara Sprock IT 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8552
Melissa Stillson Public Health 315 1st Avenue, Suite 208 Rock Rapids IA 51246 (712) 472-8200 (712) 472-4039
Amie Griesse Recorder 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8528 (712) 472-8523 R
Brian Hilt Sheriff 410 S Boone Rock Rapids IA 51246 (712) 472-8300 (712) 472-2303 R
Cory Altena Supervisor 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8517 (712) 472-2829 R
Dennis Scholten Supervisor 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8517 (712) 472-2829 R
Douglas Bosch Supervisor 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8517 (712) 472-2829 R
Jerry Birkey Supervisor 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8517 (712) 472-2829 R
Steven Herman Supervisor 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8517 (712) 472-2829 R
Stacy Knobloch Treasurer 206 S 2nd Ave Rock Rapids IA 51246 (712) 472-8500 (712) 472-2829 R
Ed Hodgson Veterans Affairs 300 S 4th Ave Rock Rapids IA 51246 (712) 472-3405 (712) 472-3095
Last Updated: 06/17/2026 08:00 AM