| Index | Mardela Springs | Maryland | National |
| Income per capita | $41,170 | $55,489 | $44,883 |
| Median household income | $122,966 | $112,126 | $81,333 |
| Median income owner occupied | $126,874 | $142,381 | $106,172 |
| Median income renter occupied | $95,918 | $70,540 | $52,080 |
| Median earnings male | $58,330 | $69,331 | $54,343 |
| Median earnings female | $55,615 | $51,519 | $38,439 |
| Unemployment rate | 4.9% | 4.8% | 4.9% |
| Poverty level | 2.1% | 9.9% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 18.5% | 18.5% |
| Manufacturing sector | 1.5% | 1.5% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 23.7% | 23.7% |
| Public administration | 10.4% | 10.4% |
| Transportation, warehousing & utilities | 3.7% | 3.7% |
| Education, health & social services | 14.8% | 14.8% |
| Other | 27.4% | 27.4% |
| City | Population | Household Income | National Avg. |
| Allen, MD | 429 | $172,843 | 112.5% |
| Quantico, MD | 205 | $159,067 | 95.6% |
| Mount Vernon, MD | 1,052 | $131,934 | 62.2% |
| Jesterville, MD | 230 | $120,606 | 48.3% |
| Bethel, DE | 418 | $112,084 | 37.8% |
| Mardela Springs, MD | 500 | $122,966 | 51.2% |
| City | Population | Household Income | National Avg. |
| Orchid, FL | 500 | $214,071 | 163.2% |
| Sopchoppy, FL | 500 | $62,218 | 23.5% |
| Rudd, IA | 500 | $79,037 | 2.8% |
| Laytonsville, MD | 500 | $238,685 | 193.5% |
| Cartwright, OK | 500 | $68,680 | 15.6% |
| Mardela Springs, MD | 500 | $122,966 | 51.2% |