| Index | Petersburg | Illinois | National |
| Income per capita | $43,622 | $31,502 | $29,829 |
| Median household income | $62,574 | $59,196 | $55,322 |
| Median income owner occupied | $71,810 | $75,354 | $70,586 |
| Median income renter occupied | $34,917 | $34,488 | $35,192 |
| Median earnings male | $40,060 | $40,474 | $36,919 |
| Median earnings female | $35,313 | $27,197 | $26,250 |
| Unemployment rate | 4.1% | 5.3% | 4.7% |
| Poverty level | 13.5% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 10.3% | 10.3% |
| Manufacturing sector | 2.4% | 2.4% |
| Financial & insurance services | 0.9% | 0.9% |
| Wholesale & retail services | 8.2% | 8.2% |
| Public administration | 4.5% | 4.5% |
| Transportation, warehousing & utilities | 12.2% | 12.2% |
| Education, health & social services | 21.8% | 21.8% |
| Other | 38.1% | 38.1% |
| City | Population | Household Income | National Avg. |
| Sherman, IL | 4,470 | $123,232 | 122.8% |
| Lake Petersburg, IL | 547 | $96,750 | 74.9% |
| Athens, IL | 2,349 | $78,194 | 41.3% |
| New Holland, IL | 257 | $77,083 | 39.3% |
| Cantrall, IL | 104 | $73,125 | 32.2% |
| Petersburg, IL | 2,564 | $62,574 | 13.1% |
| City | Population | Household Income | National Avg. |
| Premont, TX | 2,564 | $38,902 | 29.7% |
| Fobes Hill, WA | 2,564 | $114,545 | 107.1% |
| Cape Neddick, ME | 2,563 | $87,578 | 58.3% |
| Glenwood, MN | 2,563 | $45,852 | 17.1% |
| Pembroke, GA | 2,565 | $50,925 | 7.9% |
| Petersburg, IL | 2,564 | $62,574 | 13.1% |