| Index | Monmouth | Iowa | National |
| Income per capita | $34,768 | $42,672 | $44,883 |
| Median household income | $68,421 | $81,387 | $81,333 |
| Median income owner occupied | $80,372 | $98,724 | $106,172 |
| Median income renter occupied | $48,330 | $45,890 | $52,080 |
| Median earnings male | $49,508 | $54,047 | $54,343 |
| Median earnings female | $58,054 | $36,462 | $38,439 |
| Unemployment rate | 0.9% | 3.2% | 4.9% |
| Poverty level | 14.5% | 12.3% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 16.3% | 16.3% |
| Manufacturing sector | 32.6% | 32.6% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 37.2% | 37.2% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 4.7% | 4.7% |
| Education, health & social services | 4.7% | 4.7% |
| Other | 4.7% | 4.7% |
| City | Population | Household Income | National Avg. |
| Delmar, IA | 511 | $98,610 | 21.2% |
| Lowden, IA | 940 | $92,833 | 14.1% |
| Olin, IA | 997 | $83,958 | 3.2% |
| Stanwood, IA | 699 | $83,793 | 3.0% |
| Clarence, IA | 1,188 | $80,003 | 1.6% |
| Monmouth, IA | 136 | $68,421 | 15.9% |
| City | Population | Household Income | National Avg. |
| Pitkas Point, AK | 136 | $76,346 | 6.1% |
| Lester, AL | 136 | $64,549 | 20.6% |
| McKittrick, CA | 136 | $58,026 | 28.7% |
| Vallecito, CA | 136 | $66,018 | 18.8% |
| Volta, CA | 136 | $61,660 | 24.2% |
| Monmouth, IA | 136 | $68,421 | 15.9% |