Lyon County, website
Lyon County in Iowa uses area code 712. This page is a phonebook directory where you will find the physical address and contact information of the most relevant government offices in Lyon, including the Clerk’s Office, Sheriff’s Office, and the Health Department.
Sheriff’s Office
410 S. Boone St.
Rock Rapids, IA 51246
Phone: (712) 472-8300
Fax: (712) 472-2303
Police Department
324 1st Ave.
Rock Rapids, IA 51246
Phone: (712) 472-2558
Clerk of Court
206 South 2nd Avenue
Rock Rapids, IA 51246
Phone: (712) 472-8530
District Court
206 South 2nd Avenue
Rock Rapids, IA 51246
Phone: (712) 472-8530
County Attorney
206 S. 2nd Avenue, Ste. 301
Rock Rapids, IA 51246
Phone: (712) 472-8545
Treasurer
206 S. 2nd Avenue, Ste. 107
Rock Rapids, IA 51246
Phone: (712) 472-8500
Assessor
206 S. 2nd Avenue, Ste. 103
Rock Rapids, IA 51246
Phone: (712) 472-8550
Fax: (712) 472-2829
Lyon County Jail
410 South Boone Street
Rock Rapids, IA 51246
Phone: (712) 472-8300
Emergency Management
410 South Boone
Rock Rapids, IA 51246
Phone: (712) 472-8330
Fax: (712) 472-2303
Fire Department
310 S. Third Ave.
Rock Rapids, IA 51246
Phone: (712) 472-3651
Human Resources Department
315 1st Ave., Suite 210
Rock Rapids, IA 51246
Phone: (712) 255-2699
Health Department
315 First Ave., Ste. 208
Rock Rapids, IA 51246
Phone: (712) 472-8200
School District
1010 S. Greene Street
Rock Rapids, IA 51246
Phone: (712) 472-2664
Fax: (712) 472-2115