| Index | Johnston | Iowa | National |
| Income per capita | $49,775 | $28,872 | $29,829 |
| Median household income | $92,984 | $54,570 | $55,322 |
| Median income owner occupied | $114,235 | $66,527 | $70,586 |
| Median income renter occupied | $56,597 | $30,828 | $35,192 |
| Median earnings male | $66,801 | $37,409 | $36,919 |
| Median earnings female | $43,135 | $25,115 | $26,250 |
| Unemployment rate | 1.0% | 3.1% | 4.7% |
| Poverty level | 5.1% | 12.3% | 15.1% |


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| 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 | 4,797 | $127,226 | 130.0% |
| Van Meter, IA | 1,386 | $111,736 | 102.0% |
| Alleman, IA | 438 | $111,250 | 101.1% |
| Huxley, IA | 3,912 | $109,583 | 98.1% |
| Clive, IA | 17,246 | $107,268 | 93.9% |
| Johnston, IA | 22,077 | $92,984 | 68.1% |
| City | Population | Household Income | National Avg. |
| Corcoran, CA | 22,078 | $42,997 | 22.3% |
| Huntsville, ON | 22,073 | n/a | |
| Nixa, MO | 22,086 | $63,176 | 14.2% |
| Villa Park, IL | 22,087 | $79,314 | 43.4% |
| Chester, VA | 22,098 | $73,800 | 33.4% |
| Johnston, IA | 22,077 | $92,984 | 68.1% |