| Index | Mount Joy | Pennsylvania | National |
| Income per capita | $35,456 | $30,137 | $29,829 |
| Median household income | $65,770 | $54,895 | $55,322 |
| Median income owner occupied | $79,333 | $68,587 | $70,586 |
| Median income renter occupied | $41,358 | $31,605 | $35,192 |
| Median earnings male | $42,617 | $39,478 | $36,919 |
| Median earnings female | $33,406 | $26,440 | $26,250 |
| Unemployment rate | 1.6% | 4.5% | 4.7% |
| Poverty level | 10.3% | 13.3% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 6.6% | 6.6% |
| Manufacturing sector | 20.2% | 20.2% |
| Financial & insurance services | 2.8% | 2.8% |
| Wholesale & retail services | 12.1% | 12.1% |
| Public administration | 4.6% | 4.6% |
| Transportation, warehousing & utilities | 14.6% | 14.6% |
| Education, health & social services | 12.9% | 12.9% |
| Other | 24.0% | 24.0% |
| 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% |
| Refton, PA | 597 | $101,563 | 83.6% |
| Mount Joy, PA | 8,204 | $65,770 | 18.9% |
| City | Population | Household Income | National Avg. |
| Kirkland Lake, ON | 8,204 | n/a | |
| Westlake Village, CA | 8,203 | $153,007 | 176.6% |
| Carl Junction, MO | 8,202 | $61,250 | 10.7% |
| North Patchogue, NY | 8,202 | $103,854 | 87.7% |
| Lockwood, MT | 8,206 | $62,572 | 13.1% |
| Mount Joy, PA | 8,204 | $65,770 | 18.9% |