Lake County Public Records
| About Lake County | |
| Land Area: | 563.23 Square Miles |
| County Located in: | South Dakota |
| Population Estimate: | 11994 People |
| Number of Households: | 4372 |
| Number of Businesses: | 1003 |
| Median Household Income: | $47225 |
| Per Capita Income: | $33442 |
| Unemployment Rate: | 3.1 |
| Annual Number of Births: | 137 |
| Annual Number of Deaths: | 116 |
| Annual New Home Starts: | 60 |
Lake County Records Offices
County Seat of Lake
20 N Washington Avenue
Madison, SD 57042
605-256-7500
Assessor
200 E Center St
Madison, SD 57042
605-256-7605
Auditor
200 E Center St
Madison, SD 57042
605-256-7600
Register of Deeds
200 E Center St
Madison, SD 57042
605-256-7614
Treasurer
200 E Center St
Madison, SD 57042
605-256-7618
Madison Chamber of Commerce
315 S Egan Ave
Madison, SD 57042
605-256-2454
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