| Index | McKnightstown | Pennsylvania | National |
| Income per capita | $55,114 | $45,532 | $44,883 |
| Median household income | $142,076 | $80,478 | $81,333 |
| Median income owner occupied | $156,484 | $100,571 | $106,172 |
| Median income renter occupied | $0 | $46,621 | $52,080 |
| Median earnings male | $64,680 | $57,544 | $54,343 |
| Median earnings female | $0 | $39,017 | $38,439 |
| Unemployment rate | 0.0% | 4.7% | 4.9% |
| Poverty level | 11.6% | 13.3% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 0.0% | 0.0% |
| Manufacturing sector | 4.7% | 4.7% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 59.4% | 59.4% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 15.6% | 15.6% |
| Other | 20.3% | 20.3% |
| City | Population | Household Income | National Avg. |
| Lake Heritage, PA | 2,858 | $173,185 | 112.9% |
| Guilford, PA | 3,698 | $157,761 | 94.0% |
| Aspers, PA | 198 | $140,656 | 72.9% |
| Ringgold, MD | 92 | $138,937 | 70.8% |
| Smithsburg, MD | 3,042 | $131,812 | 62.1% |
| McKnightstown, PA | 511 | $142,076 | 74.7% |
| City | Population | Household Income | National Avg. |
| Cohasset, CA | 511 | $98,939 | 21.6% |
| Miranda, CA | 511 | $104,673 | 28.7% |
| Aguilar, CO | 511 | $36,275 | 55.4% |
| Garcon Point, FL | 511 | $204,696 | 151.7% |
| Delmar, IA | 511 | $98,610 | 21.2% |
| McKnightstown, PA | 511 | $142,076 | 74.7% |