| Index | Mason City | Illinois | National |
| Income per capita | $26,546 | $31,502 | $29,829 |
| Median household income | $40,714 | $59,196 | $55,322 |
| Median income owner occupied | $62,739 | $75,354 | $70,586 |
| Median income renter occupied | $26,705 | $34,488 | $35,192 |
| Median earnings male | $28,472 | $40,474 | $36,919 |
| Median earnings female | $25,000 | $27,197 | $26,250 |
| Unemployment rate | 1.4% | 5.3% | 4.7% |
| Poverty level | 21.3% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 14.0% | 14.0% |
| Manufacturing sector | 21.0% | 21.0% |
| Financial & insurance services | 0.7% | 0.7% |
| Wholesale & retail services | 15.2% | 15.2% |
| Public administration | 6.0% | 6.0% |
| Transportation, warehousing & utilities | 18.4% | 18.4% |
| Education, health & social services | 3.6% | 3.6% |
| Other | 19.1% | 19.1% |
| City | Population | Household Income | National Avg. |
| New Holland, IL | 257 | $77,083 | 39.3% |
| Elkhart, IL | 459 | $69,219 | 25.1% |
| Petersburg, IL | 2,564 | $62,574 | 13.1% |
| Delavan, IL | 1,708 | $62,500 | 13.0% |
| San Jose, IL | 530 | $57,813 | 4.5% |
| Mason City, IL | 2,342 | $40,714 | 26.4% |
| City | Population | Household Income | National Avg. |
| Bay, AR | 2,341 | $53,223 | 3.8% |
| Franklinton, NC | 2,341 | $45,938 | 17.0% |
| Fairfield Bay, AR | 2,343 | $44,135 | 20.2% |
| Somers, CT | 2,343 | $96,875 | 75.1% |
| Wrens, GA | 2,343 | $31,300 | 43.4% |
| Mason City, IL | 2,342 | $40,714 | 26.4% |