| Index | Marietta | Pennsylvania | National |
| Income per capita | $40,176 | $45,532 | $44,883 |
| Median household income | $67,683 | $80,478 | $81,333 |
| Median income owner occupied | $87,926 | $100,571 | $106,172 |
| Median income renter occupied | $41,141 | $46,621 | $52,080 |
| Median earnings male | $71,887 | $57,544 | $54,343 |
| Median earnings female | $43,080 | $39,017 | $38,439 |
| Unemployment rate | 3.4% | 4.7% | 4.9% |
| Poverty level | 16.9% | 13.3% | 15.1% |

| 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 | 171 | $201,400 | 147.6% |
| Penryn, PA | 1,085 | $179,192 | 120.3% |
| Stonybrook, PA | 3,270 | $174,617 | 114.7% |
| Grantley, PA | 4,408 | $152,676 | 87.7% |
| Maytown, PA | 4,266 | $151,717 | 86.5% |
| Marietta, PA | 2,687 | $67,683 | 16.8% |
| City | Population | Household Income | National Avg. |
| West Fork, AR | 2,687 | $88,506 | 8.8% |
| Wayne Heights, PA | 2,686 | $101,366 | 24.6% |
| Parsons, TN | 2,686 | $42,856 | 47.3% |
| Talty, TX | 2,686 | $186,662 | 129.5% |
| Pilot Butte, SK | 2,686 | n/a | |
| Marietta, PA | 2,687 | $67,683 | 16.8% |