Demographics & People — Lake Madison, South Dakota
Population Overview
| Population (Census) | 885 |
|---|
| Estimated 2026 | ~1,100 |
|---|
| Median Age | 63.2 |
|---|
| Total Households | 423 |
|---|
| Family Households | 305 |
|---|
| Average Household Size | 2.09 |
|---|
| Diversity Index | N/A (N/A) |
|---|
Race & Ethnicity
| White | 708 |
|---|
| Black or African American | 0 |
|---|
| Asian | 0 |
|---|
| Hispanic or Latino | 0 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| German | 332 |
| Norwegian | 144 |
| Irish | 141 |
| Other groups | 116 |
| Unclassified or not reported | 87 |
| American | 73 |
| English | 69 |
| Dutch | 39 |
| Welsh | 35 |
| Swedish | 27 |
Language
| English Only | 870 |
|---|
| Spanish | 0 |
|---|
| Population 5+ | 885 |
|---|
Veterans
| Veterans | 99 |
|---|
| Population 18+ | 773 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Lake Madison, South Dakota.
