| Index | Adelphi | Maryland | National |
| Income per capita | $39,141 | $55,489 | $44,883 |
| Median household income | $100,840 | $112,126 | $81,333 |
| Median income owner occupied | $144,349 | $142,381 | $106,172 |
| Median income renter occupied | $84,482 | $70,540 | $52,080 |
| Median earnings male | $50,764 | $69,331 | $54,343 |
| Median earnings female | $40,063 | $51,519 | $38,439 |
| Unemployment rate | 5.5% | 4.8% | 4.9% |
| Poverty level | 16.7% | 9.9% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 32.3% | 32.3% |
| Manufacturing sector | 1.1% | 1.1% |
| Financial & insurance services | 1.3% | 1.3% |
| Wholesale & retail services | 11.3% | 11.3% |
| Public administration | 2.3% | 2.3% |
| Transportation, warehousing & utilities | 6.4% | 6.4% |
| Education, health & social services | 13.6% | 13.6% |
| Other | 31.5% | 31.5% |
| City | Population | Household Income | National Avg. |
| Martin's Additions, MD | 1,119 | $377,432 | 364.1% |
| Chevy Chase, MD | 3,039 | $375,807 | 362.1% |
| Chevy Chase Village, MD | 1,923 | $375,077 | 361.2% |
| Chevy Chase Section Five, MD | 780 | $371,983 | 357.4% |
| Chevy Chase View, MD | 1,184 | $371,511 | 356.8% |
| Adelphi, MD | 16,780 | $100,840 | 24.0% |
| City | Population | Household Income | National Avg. |
| Pearl River, NY | 16,781 | $187,796 | 130.9% |
| Los Osos, CA | 16,776 | $122,938 | 51.2% |
| Auburndale, FL | 16,784 | $81,506 | 0.2% |
| Somerton, AZ | 16,787 | $76,264 | 6.2% |
| Buffalo, MN | 16,770 | $103,800 | 27.6% |
| Adelphi, MD | 16,780 | $100,840 | 24.0% |