| 1620 | The first settlement in New Jersey was in Bergen. |
| 1626 | our State was divided into East and West New Jersey. |
| 1677 | Quakers purchased parts of West New Jersey from the Leni-Lenape Indians. |
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| Mansfield Township |
| 1676 | Concessions and Agreements Signed |
| 1688 | Mansfield Township was established as a Constabulry on June 8th. |
| 1770 | Reformed by Royal charter May 9th, 1770 |
| 1798 | Mansfield Township Incorporated on February 21st |
| 1850 | Fieldsboro Borough formed within Mansfield township as Fieldsborough March 7th |
| 1852 | Bordentown Township (including Newbold Island) formed from parts of Mansfield and Chesterfield Townships by Referendum March 3rd |
| 1852 | March 8th Bordentown and Fieldsboro boroughs became parts of Bordentown Township |
| 1872 | Florence township formed from parts of Mansfield Township |
| 1877 | Bordentown city separated from township |
| 1894 | Fieldsboro bor. separated from township |
Today's Mansfield Township is bounded to the north by Bordentown Township, north and northeast by Chesterfield Township, south by Springfield Township and northwest by Florence Township and the Delaware River. |
