| Index | Clay City | Illinois | National |
| Income per capita | $35,237 | $47,397 | $44,883 |
| Median household income | $66,936 | $88,967 | $81,333 |
| Median income owner occupied | $86,889 | $111,557 | $106,172 |
| Median income renter occupied | $41,109 | $52,117 | $52,080 |
| Median earnings male | $53,657 | $60,185 | $54,343 |
| Median earnings female | $31,095 | $40,368 | $38,439 |
| Unemployment rate | 1.3% | 6.6% | 4.9% |
| Poverty level | 22.1% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 5.9% | 5.9% |
| Manufacturing sector | 28.8% | 28.8% |
| Financial & insurance services | 3.2% | 3.2% |
| Wholesale & retail services | 15.5% | 15.5% |
| Public administration | 9.1% | 9.1% |
| Transportation, warehousing & utilities | 11.9% | 11.9% |
| Education, health & social services | 1.8% | 1.8% |
| Other | 23.7% | 23.7% |
| City | Population | Household Income | National Avg. |
| Sailor Springs, IL | 117 | $93,118 | 14.5% |
| Iola, IL | 94 | $75,814 | 6.8% |
| Flora, IL | 4,788 | $74,034 | 9.0% |
| Olney, IL | 9,196 | $73,488 | 9.6% |
| Noble, IL | 673 | $60,218 | 26.0% |
| Clay City, IL | 917 | $66,936 | 17.7% |
| City | Population | Household Income | National Avg. |
| Hopland, CA | 917 | $85,437 | 5.0% |
| Arbon Valley, ID | 917 | $63,440 | 22.0% |
| Carthage, IN | 917 | $55,502 | 31.8% |
| Buras, LA | 917 | $80,257 | 1.3% |
| Carolina, RI | 917 | $133,598 | 64.3% |
| Clay City, IL | 917 | $66,936 | 17.7% |