| Index | Armstrong | Missouri | National |
| Income per capita | $27,896 | $39,715 | $44,883 |
| Median household income | $38,868 | $72,613 | $81,333 |
| Median income owner occupied | $0 | $90,986 | $106,172 |
| Median income renter occupied | $39,505 | $45,210 | $52,080 |
| Median earnings male | $52,416 | $52,324 | $54,343 |
| Median earnings female | $35,312 | $36,971 | $38,439 |
| Unemployment rate | 1.8% | 4.4% | 4.9% |
| Poverty level | 8.0% | 15.3% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 29.8% | 29.8% |
| Manufacturing sector | 10.6% | 10.6% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 6.4% | 6.4% |
| Public administration | 8.5% | 8.5% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 2.1% | 2.1% |
| Other | 42.6% | 42.6% |
| City | Population | Household Income | National Avg. |
| Arrow Rock, MO | 38 | $99,647 | 22.5% |
| Huntsville, MO | 1,864 | $72,124 | 11.3% |
| Glasgow, MO | 1,142 | $67,473 | 17.0% |
| Fayette, MO | 2,776 | $66,745 | 17.9% |
| Harrisburg, MO | 349 | $64,570 | 20.6% |
| Armstrong, MO | 269 | $38,868 | 52.2% |
| City | Population | Household Income | National Avg. |
| Industry, CA | 269 | $128,123 | 57.5% |
| Crystal Lake, IA | 269 | $95,718 | 17.7% |
| Lineville, IA | 269 | $76,758 | 5.6% |
| Magnolia, IL | 269 | $79,844 | 1.8% |
| Jeff, KY | 269 | $0 | 100.0% |
| Armstrong, MO | 269 | $38,868 | 52.2% |