| Rank | County | Housing Units |
|---|---|---|
| 1 | Bergen County, New Jersey | 352,478 |
| 2 | Essex County, New Jersey | 312,952 |
| 3 | Middlesex County, New Jersey | 296,076 |
| 4 | Ocean County, New Jersey | 278,862 |
| 5 | Hudson County, New Jersey | 272,798 |
| 6 | Monmouth County, New Jersey | 258,987 |
| 7 | Camden County, New Jersey | 204,923 |
| 8 | Union County, New Jersey | 199,684 |
| 9 | Morris County, New Jersey | 190,659 |
| 10 | Passaic County, New Jersey | 176,264 |
| 11 | Burlington County, New Jersey | 176,098 |
| 12 | Mercer County, New Jersey | 143,390 |
| 13 | Atlantic County, New Jersey | 126,782 |
| 14 | Somerset County, New Jersey | 123,487 |
| 15 | Gloucester County, New Jersey | 110,814 |
| 16 | Cape May County, New Jersey | 98,017 |
| 17 | Sussex County, New Jersey | 62,265 |
| 18 | Cumberland County, New Jersey | 55,921 |
| 19 | Hunterdon County, New Jersey | 49,724 |
| 20 | Warren County, New Jersey | 44,908 |
| 21 | Salem County, New Jersey | 27,464 |
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