| Index | Plainfield | Iowa | National |
| Income per capita | $43,402 | $42,672 | $44,883 |
| Median household income | $88,376 | $81,387 | $81,333 |
| Median income owner occupied | $104,858 | $98,724 | $106,172 |
| Median income renter occupied | $78,994 | $45,890 | $52,080 |
| Median earnings male | $69,508 | $54,047 | $54,343 |
| Median earnings female | $40,122 | $36,462 | $38,439 |
| Unemployment rate | 6.0% | 3.2% | 4.9% |
| Poverty level | 7.9% | 12.3% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 13.6% | 13.6% |
| Manufacturing sector | 28.0% | 28.0% |
| Financial & insurance services | 1.5% | 1.5% |
| Wholesale & retail services | 14.4% | 14.4% |
| Public administration | 2.3% | 2.3% |
| Transportation, warehousing & utilities | 9.8% | 9.8% |
| Education, health & social services | 7.6% | 7.6% |
| Other | 18.2% | 18.2% |
| City | Population | Household Income | National Avg. |
| Denver, IA | 1,811 | $119,270 | 46.6% |
| Janesville, IA | 1,077 | $107,725 | 32.4% |
| Waverly, IA | 10,459 | $97,900 | 20.4% |
| Tripoli, IA | 1,390 | $94,433 | 16.1% |
| Ionia, IA | 304 | $92,512 | 13.7% |
| Plainfield, IA | 416 | $88,376 | 8.7% |
| City | Population | Household Income | National Avg. |
| Uriah, AL | 416 | $62,825 | 22.8% |
| Nutrioso, AZ | 416 | $0 | 100.0% |
| Pinedale, AZ | 416 | $0 | 100.0% |
| Danbury, IA | 416 | $83,902 | 3.2% |
| Hindsboro, IL | 416 | $86,668 | 6.6% |
| Plainfield, IA | 416 | $88,376 | 8.7% |