New Jersey County Creation Dates and Parent CountiesEdit This Page
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| Name of County | Date Formed | Parent County | Progeny County |
| Atlantic | 07 Feb 1837 | Burlington | none |
| Bergen | 01 Mar 1683 | Colonial lands | Hudson 1840, Passiac 1837 |
| Burlington | 17 May 1677 | Colonial lands | Atlantic 1837, Ocean 1850 |
| Camden | 13 Mar 1844 | Gloucester | none |
| Cape May | 12 Nov 1692 | Cumberland | none |
| Cumberland | 19 Jan 1748 | Salem | Cape May 1692 |
| Essex | 01 Mar 1683 | Colonial Lands | none |
| Gloucester | 28 May 1686 | Colonial Lands | Camden 1844 |
| Hudson | 22 Feb 1840 | Bergen | none |
| Hunterdon | 13 Mar 1714 | Somerset | Morris 1739 |
| Mercer | 22 Feb 1838 | Somerset, Middlesex | none |
| Middlesex | 01 Mar 1683 | Colonial lands | Mercer 1838, Somerset 1688 |
| Monmouth | 01 Mar 1683 | Colonial Lands | Ocean 1850 |
| Morris | 15 Mar 1739 | Hutnerdon | Sussex 1857 |
| Ocean | 15 Feb 1850 | Monmouth, Burlington | none |
| Passaic | 07 feb 1837 | Bergen | none |
| Salem | 17 May 1694 | Colonial lands | none |
| Somerset | 26 May 1688 | Middlesex | Hunterdon 1714, Mercer 1838 |
| Sussex | 16 May 1753 | Morris | Warren 1824 |
| Union | 19 Mar 1857 | Essex | none |
| Warren | 20 Nov 1824 | Sussex | none |
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- This page was last modified on 13 March 2009, at 04:43.
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