Upper Deerfield Township was incorporated as a township by an act of the New Jersey Legislature on February 23, 1922, from portions of Deerfield Township, based on the results of a referendum held on April 3, 1922.[19][20] The township was named for Deerfield Township, which in turn was named for Deerfield, Massachusetts.[21]

It is known as the “doughnut” around Chester Borough since it completely surrounds it, making it part of 21 pairs of “doughnut towns” in the state, where one municipality entirely surrounds another.[19] The township’s name is derived from Chestershire in England.[20] It is located within the Raritan Valley region.

What is now the City of Brigantine has passed through a series of names and re-incorporations since it was first created. The area was originally incorporated as Brigantine Beach Borough by an act of the New Jersey Legislature on June 14, 1890, from portions of Galloway Township, based on the results of a referendum held on June 3, 1890. On April 23, 1897, the area was reincorporated as the City of Brigantine City. This name lasted until April 9, 1914, when it was renamed the City of East Atlantic City. On March 16, 1924, Brigantine was incorporated as a city, replacing East Atlantic City and incorporating further portions of Galloway Township.[23] The borough was named for the many shipwrecks in the area, including those of brigantines.[24][25][26]

Fanwood was incorporated as a borough by an act of the New Jersey Legislature on October 2, 1895, from portions of Fanwood Township (now known as Scotch Plains), based on the results of a referendum held the previous day.[20] The borough was named for Fannie Wood, an author.[21][22]

Bloomingdale’s Federal Hill was the site of the 1781 Pompton Mutiny, a winter revolt of Continental Army troops that was crushed by General Robert Howe on direct orders of General George Washington.[20]

What is now Mansfield Township was formed on May 30, 1754, as Mansfield-Woodhouse Township from portions of Greenwich Township, while the area was still part of Sussex County, and was incorporated as Mansfield Township on February 21, 1798, as one of New Jersey’s initial group of 104 townships by an act of the New Jersey Legislature. The township became part of the newly formed Warren County on November 20, 1824. Portions of the township were taken to form Franklin Township (April 8, 1839) and Washington Township (April 9, 1849).[20] The township was named after William Murray, 1st Earl of Mansfield.[3]

In 1666, 64 Connecticut families led by Robert Treat bought land from the Lenni Lenape Native Americans and named it New Ark to reflect a covenant to worship freely without persecution. The territory included the future towns of Bloomfield, Montclair, Belleville and Nutley. When Bloomfield was established in 1812, Glen Ridge was a section “on the hill” composed mostly of farms and woodlands with the exception of a thriving industrial area along Toney’s Brook in the glen.[20] For most of the nineteenth century, three water-powered mills produced lumber, calico, pasteboard boxes and brass fittings. A copper mine and a sandstone quarry were located on the north side of the brook.[21]

The borough’s name is derived from the Raritans, a Native American group of Lenapes.[21] The name of the tribe is said to mean “forked river”,[22] “stream overflows” or “point on a tidal river”.[23][24]

The first Europeans to settle in the area were Dutch and the place was called Gansegat. Later it was part of Horse Neck and officially part of Newark Township. What is now Fairfield was formed on February 16, 1798, as Caldwell Township from portions of Acquackanonk Township and Newark Township. The area was named for Rev. James Caldwell. It was incorporated as one of New Jersey’s initial 104 townships by an act of the New Jersey Legislature on February 21, 1798. Portions of the township were taken to create Livingston (February 8, 1813), Fairmount Township (March 11, 1862, now part of West Orange), Caldwell borough (February 10, 1892), Verona Township (February 17, 1892, now known and including what is now Cedar Grove), North Caldwell (March 31, 1898), Essex Fells (March 31, 1902) and West Caldwell (February 24, 1904). On November 6, 1963, Caldwell Township was renamed as Fairfield Township, based on the results of a referendum passed the previous day. Fairfield was reincorporated as borough on June 8, 1964.[22] In 1978, the borough passed a referendum reincorporating itself as a township, becoming the second of more than a dozen Essex County municipalities to reclassify themselves as townships in order take advantage of federal revenue sharing policies that allocated townships a greater share of government aid to municipalities on a per capita basis.[23][24][25]

Bernardsville was incorporated as a borough by an act of the New Jersey Legislature on March 6, 1924, from portions of Bernards Township, based on the results of a referendum held on April 29, 1924.[22] The borough was named for Sir Francis Bernard, 1st Baronet, who served as governor of the Province of New Jersey.[23] In 2009, part of the borough was listed on the National Register of Historic Places as the Olcott Avenue Historic District.[24]