| Index | Agar | South Dakota | National |
| Income per capita | $25,007 | $27,516 | $29,829 |
| Median household income | $0 | $52,078 | $55,322 |
| Median income owner occupied | $0 | $66,299 | $70,586 |
| Median income renter occupied | $0 | $30,800 | $35,192 |
| Median earnings male | $41,875 | $35,140 | $36,919 |
| Median earnings female | $0 | $24,451 | $26,250 |
| Unemployment rate | 0.0% | 2.8% | 4.7% |
| Poverty level | 21.7% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 16.1% | 16.1% |
| Manufacturing sector | 3.2% | 3.2% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 29.0% | 29.0% |
| Public administration | 6.5% | 6.5% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 45.2% | 45.2% |
| City | Population | Household Income | National Avg. |
| Onida, SD | 634 | $60,938 | 10.2% |
| Gettysburg, SD | 1,273 | $58,088 | 5.0% |
| Agar, SD | 69 | $0 | 100.0% |
| City | Population | Household Income | National Avg. |
| Datto, AR | 69 | $0 | 100.0% |
| Jericho, AR | 69 | $0 | 100.0% |
| Moskowite Corner, CA | 69 | $0 | 100.0% |
| Trona, CA | 69 | $0 | 100.0% |
| Hartman, CO | 69 | $16,250 | 70.6% |
| Agar, SD | 69 | $0 | 100.0% |