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