| Index | Brentford | South Dakota | National |
| Income per capita | $64,012 | $41,166 | $44,883 |
| Median household income | $62,111 | $77,914 | $81,333 |
| Median income owner occupied | $50,218 | $100,475 | $106,172 |
| Median income renter occupied | $0 | $45,187 | $52,080 |
| Median earnings male | $87,256 | $52,540 | $54,343 |
| Median earnings female | $28,087 | $36,073 | $38,439 |
| Unemployment rate | 0.0% | 2.9% | 4.9% |
| Poverty level | 0.0% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 31.6% | 31.6% |
| Manufacturing sector | 21.1% | 21.1% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 42.1% | 42.1% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 5.3% | 5.3% |
| City | Population | Household Income | National Avg. |
| Northville, SD | 161 | $148,992 | 83.2% |
| Warner, SD | 518 | $143,033 | 75.9% |
| Turton, SD | 56 | $127,071 | 56.2% |
| Mansfield, SD | 93 | $97,826 | 20.3% |
| Ashton, SD | 94 | $90,989 | 11.9% |
| Brentford, SD | 63 | $62,111 | 23.6% |
| City | Population | Household Income | National Avg. |
| Jennette, AR | 63 | $75,291 | 7.4% |
| Mount Hebron, CA | 63 | $0 | 100.0% |
| Rodriguez Camp, CA | 63 | $0 | 100.0% |
| Olowalu, HI | 63 | $131,875 | 62.1% |
| Bradford, IA | 63 | $0 | 100.0% |
| Brentford, SD | 63 | $62,111 | 23.6% |