| Connecticut County Formation years | ||||||||||||||
| 1643 | 1644 | 1652 | 1658 | 1662 | 1663 | 1664 | 1665 | 1666 | 1669 | 1670 | 1671 | 1674 | 1675 | 1683 |
| 1687 | 1689 | 1690 | 1694 | 1697 | 1699 | 1700 | 1706 | 1708 | 1709 | 1712 | 1714 | 1717 | 1722 | 1726 |
| 1728 | 1730 | 1738 | 1749 | 1751 | 1774 | 1776 | 1780 | 1782 | 1783 | 1785 | 1786 | 1788 | 1789 | 1796 |
| 1798 | 1799 | 1803 | 1804 | 1806 | 1807 | 1824 | 1827 | 1881 | 1885 | 1960 | ||||
| Connecticut Census Year with Modern Map overlayed: | ||||||||||||||
| 1790 | 1800 | 1810-1820 | 1830-1880 | 1890-1930 | ||||||||||
| Connecticut Map Abbreviations | |||
|---|---|---|---|
| unorg. = unorganized g. = gained w. = with fr. = from atmt. = attachment exch = exchanged nca.= non county area ch. = changed |
CONNECTICUT Fa - Fairfield Har - Hartford Lit - Litchfield Mi - Middlesex NH - New Haven NL - New London To - Tolland Wi - Windham |
RHODE ISLAND Pr - Providence Wa - Washington Br - Bristol Knt - Kent Ne - Newport MASSACHUSETTS Ba - Barnstable Be - Berkshire Br - Bristol Du - Dukes |
Es - Essex Fr - Franklin Hdn - Hampden Hsr - Hampshire Mi - Middlesex Nan - Nantucket No - Norfolk Pl - Plymouth Su - Suffolk Wo - Worcester |