| Index | Watertown | South Dakota | National |
| Income per capita | $43,734 | $41,166 | $44,883 |
| Median household income | $78,834 | $77,914 | $81,333 |
| Median income owner occupied | $103,530 | $100,475 | $106,172 |
| Median income renter occupied | $52,913 | $45,187 | $52,080 |
| Median earnings male | $57,858 | $52,540 | $54,343 |
| Median earnings female | $32,476 | $36,073 | $38,439 |
| Unemployment rate | 2.1% | 2.9% | 4.9% |
| Poverty level | 15.4% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 8.1% | 8.1% |
| Manufacturing sector | 23.4% | 23.4% |
| Financial & insurance services | 6.5% | 6.5% |
| Wholesale & retail services | 20.4% | 20.4% |
| Public administration | 5.5% | 5.5% |
| Transportation, warehousing & utilities | 5.9% | 5.9% |
| Education, health & social services | 6.6% | 6.6% |
| Other | 22.6% | 22.6% |
| City | Population | Household Income | National Avg. |
| Castlewood, SD | 599 | $89,263 | 9.8% |
| Florence, SD | 378 | $87,246 | 7.3% |
| Hazel, SD | 149 | $80,098 | 1.5% |
| Goodwin, SD | 104 | $78,915 | 3.0% |
| South Shore, SD | 266 | $71,265 | 12.4% |
| Watertown, SD | 22,909 | $78,834 | 3.1% |
| City | Population | Household Income | National Avg. |
| Villa Park, IL | 22,904 | $119,794 | 47.3% |
| Clinton, UT | 22,893 | $131,892 | 62.2% |
| Uxbridge, ON | 22,892 | n/a | |
| Maple Heights, OH | 22,891 | $64,916 | 20.2% |
| Fairhope, AL | 22,887 | $118,259 | 45.4% |
| Watertown, SD | 22,909 | $78,834 | 3.1% |