| Index | Johnston | Iowa | National |
| Income per capita | $75,120 | $42,672 | $44,883 |
| Median household income | $139,721 | $81,387 | $81,333 |
| Median income owner occupied | $168,510 | $98,724 | $106,172 |
| Median income renter occupied | $84,451 | $45,890 | $52,080 |
| Median earnings male | $97,800 | $54,047 | $54,343 |
| Median earnings female | $63,550 | $36,462 | $38,439 |
| Unemployment rate | 1.1% | 3.2% | 4.9% |
| Poverty level | 5.1% | 12.3% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 5.5% | 5.5% |
| Manufacturing sector | 13.1% | 13.1% |
| Financial & insurance services | 17.7% | 17.7% |
| Wholesale & retail services | 17.8% | 17.8% |
| Public administration | 3.8% | 3.8% |
| Transportation, warehousing & utilities | 4.5% | 4.5% |
| Education, health & social services | 12.1% | 12.1% |
| Other | 25.1% | 25.1% |
| City | Population | Household Income | National Avg. |
| Polk City, IA | 4,940 | $189,188 | 132.6% |
| Alleman, IA | 447 | $167,707 | 106.2% |
| Van Meter, IA | 1,436 | $164,823 | 102.7% |
| Huxley, IA | 4,000 | $163,490 | 101.0% |
| Clive, IA | 17,633 | $158,563 | 95.0% |
| Johnston, IA | 22,844 | $139,721 | 71.8% |
| City | Population | Household Income | National Avg. |
| Frederickson, WA | 22,845 | $136,600 | 68.0% |
| Patterson, CA | 22,827 | $105,997 | 30.3% |
| Wilmot, ON | 22,827 | n/a | |
| Nixa, MO | 22,872 | $95,055 | 16.9% |
| Ruston, LA | 22,812 | $48,564 | 40.3% |
| Johnston, IA | 22,844 | $139,721 | 71.8% |