| Index | Seneca | South Dakota | National |
| Income per capita | $47,011 | $41,166 | $44,883 |
| Median household income | $64,128 | $77,914 | $81,333 |
| Median income owner occupied | $64,485 | $100,475 | $106,172 |
| Median income renter occupied | $0 | $45,187 | $52,080 |
| Median earnings male | $51,520 | $52,540 | $54,343 |
| Median earnings female | $31,319 | $36,073 | $38,439 |
| Unemployment rate | 0.0% | 2.9% | 4.9% |
| Poverty level | 5.1% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 33.3% | 33.3% |
| Manufacturing sector | 0.0% | 0.0% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 8.3% | 8.3% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 58.3% | 58.3% |
| City | Population | Household Income | National Avg. |
| Tolstoy, SD | 35 | $89,013 | 9.4% |
| Hoven, SD | 320 | $62,684 | 22.9% |
| Lebanon, SD | 50 | $47,103 | 42.1% |
| Onaka, SD | 29 | $0 | 100.0% |
| Seneca, SD | 40 | $64,128 | 21.2% |
| City | Population | Household Income | National Avg. |
| Sunrise, AK | 40 | $0 | 100.0% |
| Edgewood, CA | 40 | $119,698 | 47.2% |
| McClenney Tract, CA | 40 | $3,705 | 95.4% |
| Sequoia Crest, CA | 40 | $0 | 100.0% |
| Coleman, GA | 40 | $0 | 100.0% |
| Seneca, SD | 40 | $64,128 | 21.2% |