Lyon County Public Records
| About Lyon County | |
| Land Area: | 587.5 Square Miles |
| County Located in: | Iowa |
| Population Estimate: | 11172 People |
| Number of Households: | 4428 |
| Number of Businesses: | 1269 |
| Median Household Income: | $50289 |
| Per Capita Income: | $30235 |
| Unemployment Rate: | 2.6 |
| Annual Number of Births: | 173 |
| Annual Number of Deaths: | 129 |
| Annual New Home Starts: | 29 |
Lyon County Records Offices
County Seat of Lyon
310 S 3rd Ave
Rock Rapids, IA 51246
712-472-2553
Assessor
206 S 2nd Ave # A
Rock Rapids, IA 51246
712-472-3592
Auditor
206 S 2nd Ave # D
Rock Rapids, IA 51246
712-472-3713
Engineer
315 1st Ave # 100
Rock Rapids, IA 51246
712-472-8230
Jail
410 S Boone St
Rock Rapids, IA 51246
Recorder
206 S 2nd Ave # G
Rock Rapids, IA 51246
712-472-2381
Treasurer
206 S 2nd Ave # B
Rock Rapids, IA 51246
712-472-3703
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