| Index | Lake Madison | South Dakota | National |
| Income per capita | $96,738 | $41,166 | $44,883 |
| Median household income | $144,053 | $77,914 | $81,333 |
| Median income owner occupied | $147,528 | $100,475 | $106,172 |
| Median income renter occupied | $109,910 | $45,187 | $52,080 |
| Median earnings male | $99,774 | $52,540 | $54,343 |
| Median earnings female | $43,708 | $36,073 | $38,439 |
| Unemployment rate | 2.5% | 2.9% | 4.9% |
| Poverty level | 5.7% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 8.5% | 8.5% |
| Manufacturing sector | 8.1% | 8.1% |
| Financial & insurance services | 7.6% | 7.6% |
| Wholesale & retail services | 19.0% | 19.0% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 11.4% | 11.4% |
| Education, health & social services | 17.1% | 17.1% |
| Other | 28.4% | 28.4% |
| City | Population | Household Income | National Avg. |
| Brant Lake, SD | 68 | $127,409 | 56.7% |
| Colman, SD | 707 | $123,482 | 51.8% |
| Chester, SD | 292 | $86,340 | 6.2% |
| Wentworth, SD | 157 | $85,569 | 5.2% |
| Ramona, SD | 426 | $82,717 | 1.7% |
| Lake Madison, SD | 833 | $144,053 | 77.1% |
| City | Population | Household Income | National Avg. |
| Imboden, AR | 833 | $67,559 | 16.9% |
| Cobb, CA | 833 | $117,882 | 44.9% |
| Henning, MN | 833 | $61,486 | 24.4% |
| Pearlington, MS | 833 | $77,579 | 4.6% |
| Peña Blanca, NM | 833 | $58,965 | 27.5% |
| Lake Madison, SD | 833 | $144,053 | 77.1% |