| Rank | County | Average People Per Household |
|---|---|---|
| 1 | Passaic County, New Jersey | 3.0 |
| 2 | Union County, New Jersey | 2.9 |
| 3 | Cumberland County, New Jersey | 2.8 |
| 4 | Middlesex County, New Jersey | 2.8 |
| 5 | Somerset County, New Jersey | 2.8 |
| 6 | Essex County, New Jersey | 2.8 |
| 7 | Gloucester County, New Jersey | 2.7 |
| 8 | Morris County, New Jersey | 2.7 |
| 9 | Bergen County, New Jersey | 2.7 |
| 10 | Monmouth County, New Jersey | 2.7 |
| 11 | Mercer County, New Jersey | 2.7 |
| 12 | Sussex County, New Jersey | 2.7 |
| 13 | Camden County, New Jersey | 2.7 |
| 14 | Burlington County, New Jersey | 2.6 |
| 15 | Atlantic County, New Jersey | 2.6 |
| 16 | Hunterdon County, New Jersey | 2.6 |
| 17 | Salem County, New Jersey | 2.6 |
| 18 | Hudson County, New Jersey | 2.6 |
| 19 | Warren County, New Jersey | 2.6 |
| 20 | Ocean County, New Jersey | 2.5 |
| 21 | Cape May County, New Jersey | 2.1 |
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