| Index | Delmar | Delaware | National |
| Income per capita | $20,722 | $31,118 | $29,829 |
| Median household income | $48,393 | $61,017 | $55,322 |
| Median income owner occupied | $52,446 | $72,470 | $70,586 |
| Median income renter occupied | $27,072 | $38,152 | $35,192 |
| Median earnings male | $37,045 | $39,093 | $36,919 |
| Median earnings female | $25,429 | $30,154 | $26,250 |
| Unemployment rate | 1.5% | 4.5% | 4.7% |
| Poverty level | 16.2% | 12.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 16.8% | 16.8% |
| Manufacturing sector | 13.3% | 13.3% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 17.6% | 17.6% |
| Public administration | 3.8% | 3.8% |
| Transportation, warehousing & utilities | 12.7% | 12.7% |
| Education, health & social services | 6.1% | 6.1% |
| Other | 22.5% | 22.5% |
| City | Population | Household Income | National Avg. |
| Allen, MD | 419 | $113,816 | 105.7% |
| Quantico, MD | 199 | $104,732 | 89.3% |
| Mount Vernon, MD | 1,016 | $87,895 | 58.9% |
| Mardela Springs, MD | 487 | $83,350 | 50.7% |
| Vienna, MD | 423 | $74,063 | 33.9% |
| Delmar, DE | 2,153 | $48,393 | 12.5% |
| City | Population | Household Income | National Avg. |
| Cowarts, AL | 2,153 | $49,414 | 10.7% |
| Ault, CO | 2,153 | $66,155 | 19.6% |
| Cave Junction, OR | 2,153 | $29,744 | 46.2% |
| Wellington, TX | 2,153 | $35,000 | 36.7% |
| Leechburg, PA | 2,154 | $50,000 | 9.6% |
| Delmar, DE | 2,153 | $48,393 | 12.5% |