All counties in New Jersey
| County Name | Population | State | Rank |
|---|
| Bergen County | 905,116 | New Jersey | 1 |
| Middlesex County | 809,858 | New Jersey | 2 |
| Essex County | 783,969 | New Jersey | 3 |
| Hudson County | 634,266 | New Jersey | 4 |
| Monmouth County | 630,380 | New Jersey | 5 |
| Ocean County | 576,567 | New Jersey | 6 |
| Union County | 536,499 | New Jersey | 7 |
| Camden County | 513,657 | New Jersey | 8 |
| Passaic County | 501,226 | New Jersey | 9 |
| Morris County | 492,276 | New Jersey | 10 |
| Burlington County | 448,734 | New Jersey | 11 |
| Mercer County | 366,513 | New Jersey | 12 |
| Somerset County | 323,444 | New Jersey | 13 |
| Gloucester County | 288,288 | New Jersey | 14 |
| Atlantic County | 274,549 | New Jersey | 15 |
| Cumberland County | 156,898 | New Jersey | 16 |
| Sussex County | 149,265 | New Jersey | 17 |
| Hunterdon County | 128,349 | New Jersey | 18 |
| Warren County | 108,692 | New Jersey | 19 |
| Cape May County | 97,265 | New Jersey | 20 |
| Salem County | 66,083 | New Jersey | 21 |