| Index | Tarkio | Missouri | National |
| Income per capita | $27,368 | $27,044 | $29,829 |
| Median household income | $50,690 | $49,593 | $55,322 |
| Median income owner occupied | $55,302 | $62,242 | $70,586 |
| Median income renter occupied | $38,438 | $30,016 | $35,192 |
| Median earnings male | $30,694 | $34,901 | $36,919 |
| Median earnings female | $25,962 | $24,771 | $26,250 |
| Unemployment rate | 2.2% | 4.1% | 4.7% |
| Poverty level | 14.0% | 15.3% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 4.8% | 4.8% |
| Manufacturing sector | 12.8% | 12.8% |
| Financial & insurance services | 4.6% | 4.6% |
| Wholesale & retail services | 15.3% | 15.3% |
| Public administration | 1.8% | 1.8% |
| Transportation, warehousing & utilities | 14.4% | 14.4% |
| Education, health & social services | 12.1% | 12.1% |
| Other | 32.6% | 32.6% |
| City | Population | Household Income | National Avg. |
| Rock Port, MO | 1,335 | $51,014 | 7.8% |
| Elmo, MO | 177 | $50,625 | 8.5% |
| Brownville, NE | 125 | $48,958 | 11.5% |
| Watson, MO | 38 | $47,500 | 14.1% |
| Fairfax, MO | 695 | $47,188 | 14.7% |
| Tarkio, MO | 1,481 | $50,690 | 8.4% |
| City | Population | Household Income | National Avg. |
| St. David, AZ | 1,481 | $44,722 | 19.2% |
| Lewiston, CA | 1,481 | $49,818 | 9.9% |
| Greenfield, IL | 1,481 | $50,139 | 9.4% |
| Markle, IN | 1,481 | $52,333 | 5.4% |
| Beattyville, KY | 1,481 | $16,250 | 70.6% |
| Tarkio, MO | 1,481 | $50,690 | 8.4% |