| Index | Potomac | Illinois | National |
| Income per capita | $34,816 | $47,397 | $44,883 |
| Median household income | $73,524 | $88,967 | $81,333 |
| Median income owner occupied | $85,925 | $111,557 | $106,172 |
| Median income renter occupied | $54,899 | $52,117 | $52,080 |
| Median earnings male | $54,490 | $60,185 | $54,343 |
| Median earnings female | $42,033 | $40,368 | $38,439 |
| Unemployment rate | 3.9% | 6.6% | 4.9% |
| Poverty level | 12.8% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 15.6% | 15.6% |
| Manufacturing sector | 26.0% | 26.0% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 11.6% | 11.6% |
| Public administration | 1.7% | 1.7% |
| Transportation, warehousing & utilities | 10.4% | 10.4% |
| Education, health & social services | 6.4% | 6.4% |
| Other | 28.3% | 28.3% |
| City | Population | Household Income | National Avg. |
| St. Joseph, IL | 4,205 | $138,312 | 70.1% |
| Penfield, IL | 243 | $112,093 | 37.8% |
| Royal, IL | 381 | $111,941 | 37.6% |
| Muncie, IL | 118 | $100,462 | 23.5% |
| Henning, IL | 266 | $95,824 | 17.8% |
| Potomac, IL | 769 | $73,524 | 9.6% |
| City | Population | Household Income | National Avg. |
| Twin Valley, MN | 769 | $68,069 | 16.3% |
| Ulm, MT | 769 | $118,822 | 46.1% |
| Old Fort, NC | 769 | $42,019 | 48.3% |
| Sycamore, OH | 769 | $64,989 | 20.1% |
| Tipton, OK | 769 | $51,026 | 37.3% |
| Potomac, IL | 769 | $73,524 | 9.6% |