Madison city, South Dakota
Official LSAD Designation: Madison city • Census GEOID: 4640220
• Lake County
Demographics & Population Profile
Population and demographics for Madison city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 6,065 | — | 2025 | Census |
| Median Age | 40.1 yrs | ±2.4 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 2,573 | ±141 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).