| Index | Kappa | Illinois | National |
| Income per capita | $68,558 | $47,397 | $44,883 |
| Median household income | $132,968 | $88,967 | $81,333 |
| Median income owner occupied | $146,289 | $111,557 | $106,172 |
| Median income renter occupied | $84,406 | $52,117 | $52,080 |
| Median earnings male | $53,642 | $60,185 | $54,343 |
| Median earnings female | $63,414 | $40,368 | $38,439 |
| Unemployment rate | 4.5% | 6.6% | 4.9% |
| Poverty level | 4.5% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 1.5% | 1.5% |
| Manufacturing sector | 8.8% | 8.8% |
| Financial & insurance services | 11.8% | 11.8% |
| Wholesale & retail services | 17.6% | 17.6% |
| Public administration | 1.5% | 1.5% |
| Transportation, warehousing & utilities | 8.8% | 8.8% |
| Education, health & social services | 10.3% | 10.3% |
| Other | 39.7% | 39.7% |
| City | Population | Household Income | National Avg. |
| Twin Grove, IL | 1,271 | $162,578 | 99.9% |
| Hudson, IL | 2,173 | $144,640 | 77.8% |
| Goodfield, IL | 1,006 | $133,304 | 63.9% |
| Lexington, IL | 2,107 | $123,719 | 52.1% |
| Carlock, IL | 647 | $103,192 | 26.9% |
| Kappa, IL | 234 | $132,968 | 63.5% |
| City | Population | Household Income | National Avg. |
| Fredonia, AL | 234 | $63,875 | 21.5% |
| Keo, AR | 234 | $0 | 100.0% |
| Sierra Village, CA | 234 | $82,036 | 0.9% |
| Mallard, IA | 234 | $54,109 | 33.5% |
| Beattie, KS | 234 | $71,216 | 12.4% |
| Kappa, IL | 234 | $132,968 | 63.5% |