| Index | Royal | Illinois | National |
| Income per capita | $52,375 | $47,397 | $44,883 |
| Median household income | $111,941 | $88,967 | $81,333 |
| Median income owner occupied | $116,820 | $111,557 | $106,172 |
| Median income renter occupied | $81,368 | $52,117 | $52,080 |
| Median earnings male | $68,587 | $60,185 | $54,343 |
| Median earnings female | $42,478 | $40,368 | $38,439 |
| Unemployment rate | 1.8% | 6.6% | 4.9% |
| Poverty level | 5.7% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 11.6% | 11.6% |
| Manufacturing sector | 1.1% | 1.1% |
| Financial & insurance services | 12.6% | 12.6% |
| Wholesale & retail services | 9.5% | 9.5% |
| Public administration | 4.2% | 4.2% |
| Transportation, warehousing & utilities | 8.4% | 8.4% |
| Education, health & social services | 22.1% | 22.1% |
| Other | 30.5% | 30.5% |
| City | Population | Household Income | National Avg. |
| St. Joseph, IL | 4,205 | $138,312 | 70.1% |
| Philo, IL | 1,447 | $133,692 | 64.4% |
| Sidney, IL | 1,347 | $115,835 | 42.4% |
| Penfield, IL | 243 | $112,093 | 37.8% |
| Savoy, IL | 9,110 | $110,129 | 35.4% |
| Royal, IL | 381 | $111,941 | 37.6% |
| City | Population | Household Income | National Avg. |
| Naknek, AK | 381 | $105,251 | 29.4% |
| Quimby, IA | 381 | $79,233 | 2.6% |
| Yale, IA | 381 | $84,222 | 3.6% |
| Herrick, IL | 381 | $72,349 | 11.0% |
| Marshall, IN | 381 | $0 | 100.0% |
| Royal, IL | 381 | $111,941 | 37.6% |