| Index | Marietta | Pennsylvania | National |
| Income per capita | $27,010 | $30,137 | $29,829 |
| Median household income | $44,732 | $54,895 | $55,322 |
| Median income owner occupied | $57,875 | $68,587 | $70,586 |
| Median income renter occupied | $27,308 | $31,605 | $35,192 |
| Median earnings male | $48,409 | $39,478 | $36,919 |
| Median earnings female | $28,889 | $26,440 | $26,250 |
| Unemployment rate | 3.3% | 4.5% | 4.7% |
| Poverty level | 16.9% | 13.3% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 17.6% | 17.6% |
| Manufacturing sector | 21.4% | 21.4% |
| Financial & insurance services | 2.6% | 2.6% |
| Wholesale & retail services | 14.6% | 14.6% |
| Public administration | 3.3% | 3.3% |
| Transportation, warehousing & utilities | 9.1% | 9.1% |
| Education, health & social services | 13.4% | 13.4% |
| Other | 17.0% | 17.0% |
| City | Population | Household Income | National Avg. |
| Mount Gretna, PA | 165 | $136,563 | 146.9% |
| Penryn, PA | 1,058 | $121,176 | 119.0% |
| Stonybrook, PA | 3,150 | $119,113 | 115.3% |
| Grantley, PA | 4,320 | $103,462 | 87.0% |
| Maytown, PA | 4,130 | $100,670 | 82.0% |
| Marietta, PA | 2,616 | $44,732 | 19.1% |
| City | Population | Household Income | National Avg. |
| Division No. 22, Unorganized, MB | 2,616 | n/a | |
| Unionville, TN | 2,615 | $63,854 | 15.4% |
| Ruleville, MS | 2,617 | $41,815 | 24.4% |
| Freemansburg, PA | 2,617 | $73,864 | 33.5% |
| Cedaredge, CO | 2,614 | $34,412 | 37.8% |
| Marietta, PA | 2,616 | $44,732 | 19.1% |