| Index | Groton | South Dakota | National |
| Income per capita | $32,658 | $27,516 | $29,829 |
| Median household income | $76,765 | $52,078 | $55,322 |
| Median income owner occupied | $84,531 | $66,299 | $70,586 |
| Median income renter occupied | $47,596 | $30,800 | $35,192 |
| Median earnings male | $50,500 | $35,140 | $36,919 |
| Median earnings female | $35,648 | $24,451 | $26,250 |
| Unemployment rate | 0.5% | 2.8% | 4.7% |
| Poverty level | 6.5% | 14.0% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 7.2% | 7.2% |
| Manufacturing sector | 21.1% | 21.1% |
| Financial & insurance services | 3.6% | 3.6% |
| Wholesale & retail services | 16.6% | 16.6% |
| Public administration | 7.4% | 7.4% |
| Transportation, warehousing & utilities | 6.5% | 6.5% |
| Education, health & social services | 16.2% | 16.2% |
| Other | 19.4% | 19.4% |
| City | Population | Household Income | National Avg. |
| Stratford, SD | 42 | $60,000 | 8.5% |
| Pierpont, SD | 193 | $59,792 | 8.1% |
| Langford, SD | 525 | $53,438 | 3.4% |
| Columbia, SD | 166 | $51,250 | 7.4% |
| Andover, SD | 78 | $40,000 | 27.7% |
| Groton, SD | 1,842 | $76,765 | 38.8% |
| City | Population | Household Income | National Avg. |
| North Corbin, KY | 1,842 | $41,204 | 25.5% |
| South Paris, ME | 1,842 | $38,920 | 29.6% |
| Fort Hancock, TX | 1,842 | $29,236 | 47.2% |
| Oroville, WA | 1,842 | $32,406 | 41.4% |
| Inukjuak, QC | 1,842 | n/a | |
| Groton, SD | 1,842 | $76,765 | 38.8% |
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