| Index | Mercersburg | Pennsylvania | National |
| Income per capita | $31,636 | $30,137 | $29,829 |
| Median household income | $51,333 | $54,895 | $55,322 |
| Median income owner occupied | $75,526 | $68,587 | $70,586 |
| Median income renter occupied | $32,917 | $31,605 | $35,192 |
| Median earnings male | $36,331 | $39,478 | $36,919 |
| Median earnings female | $28,594 | $26,440 | $26,250 |
| Unemployment rate | 2.1% | 4.5% | 4.7% |
| Poverty level | 7.7% | 13.3% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 21.1% | 21.1% |
| Manufacturing sector | 15.3% | 15.3% |
| Financial & insurance services | 0.7% | 0.7% |
| Wholesale & retail services | 17.1% | 17.1% |
| Public administration | 4.2% | 4.2% |
| Transportation, warehousing & utilities | 3.6% | 3.6% |
| Education, health & social services | 11.1% | 11.1% |
| Other | 26.9% | 26.9% |
| City | Population | Household Income | National Avg. |
| Fort Loudon, PA | 1,168 | $98,264 | 77.6% |
| Pecktonville, MD | 287 | $85,500 | 54.5% |
| Paramount-Long Meadow, MD | 2,834 | $84,706 | 53.1% |
| Fountainhead-Orchard Hills, MD | 5,964 | $75,160 | 35.9% |
| Halfway, MD | 10,804 | $67,764 | 22.5% |
| Mercersburg, PA | 1,673 | $51,333 | 7.2% |
| City | Population | Household Income | National Avg. |
| Cheswold, DE | 1,673 | $55,625 | 0.5% |
| Plainville, KS | 1,673 | $52,946 | 4.3% |
| Evart, MI | 1,673 | $30,511 | 44.8% |
| Chepachet, RI | 1,673 | $80,759 | 46.0% |
| Holliday, TX | 1,673 | $47,647 | 13.9% |
| Mercersburg, PA | 1,673 | $51,333 | 7.2% |
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