| Index | Harrington | Delaware | National |
| Income per capita | $20,495 | $31,118 | $29,829 |
| Median household income | $56,528 | $61,017 | $55,322 |
| Median income owner occupied | $72,647 | $72,470 | $70,586 |
| Median income renter occupied | $37,057 | $38,152 | $35,192 |
| Median earnings male | $28,859 | $39,093 | $36,919 |
| Median earnings female | $28,091 | $30,154 | $26,250 |
| Unemployment rate | 3.4% | 4.5% | 4.7% |
| Poverty level | 21.9% | 12.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 7.9% | 7.9% |
| Manufacturing sector | 9.8% | 9.8% |
| Financial & insurance services | 5.2% | 5.2% |
| Wholesale & retail services | 24.8% | 24.8% |
| Public administration | 13.5% | 13.5% |
| Transportation, warehousing & utilities | 8.6% | 8.6% |
| Education, health & social services | 2.9% | 2.9% |
| Other | 20.9% | 20.9% |
| City | Population | Household Income | National Avg. |
| Highland Acres, DE | 3,913 | $91,800 | 65.9% |
| Viola, DE | 173 | $87,500 | 58.2% |
| Magnolia, DE | 379 | $81,719 | 47.7% |
| Riverview, DE | 2,557 | $79,167 | 43.1% |
| Slaughter Beach, DE | 302 | $76,250 | 37.8% |
| Harrington, DE | 3,658 | $56,528 | 2.2% |
| City | Population | Household Income | National Avg. |
| Watergate, FL | 3,658 | $44,926 | 18.8% |
| Kelseyville, CA | 3,657 | $42,937 | 22.4% |
| Fairbury, NE | 3,657 | $42,134 | 23.8% |
| Richmond, Subd. A, NS | 3,657 | n/a | |
| Spencerport, NY | 3,656 | $72,043 | 30.2% |
| Harrington, DE | 3,658 | $56,528 | 2.2% |