Haddonfield is a borough located in Camden County, New Jersey. As of the 2010 United States Census, the borough had a total population of 11,593, reflecting an decline of 66 (-0.6%) from the 11,659 counted in the 2000 Census, which had in turn increased by 31 (+0.3%) from the 11,628 counted in the 1990 Census.
Haddonfield was incorporated by an Act of the New Jersey Legislature on April 6, 1875, within portions of Haddon Township, based on the results of a referendum held that same day. The borough separated from Haddon Township as an independent municipality in 1894.
Haddonfield was the second municipality in New Jersey (after Cape May) to establish a historic preservation district. In keeping with the historic appearance of the borough, some candidates for commissioner distribute colored ribbons to their supporters instead of yard signs.
Although the sale of liquor has been forbidden since 1873, it was at Haddonfield's Indian King Tavern, in the winter of 1777, that the New Jersey General Assembly met and declared New Jersey a free and independent state.
New Jersey Monthly magazine ranked Haddonfield as the 33rd best place to live in New Jersey in its 2010 rankings of the "Best Places To Live" in New Jersey.
The Haddonfield area was occupied by Lenni Lenape Native Americans. The Lenape disappeared from the local area when settlers arrived. Arrowheads and pottery shards have been found by residents by the banks of the Cooper River, hinting that there was a Native American settlement in Haddonfield at one point in time.
The Indian King Tavern, built in 1750, played a significant role in the American Revolution. During that war, the New Jersey legislature—avoiding British forces—met there, and in 1777, declared New Jersey to be an independent state. Today the tavern is a state historical site and museum.
Haddonfield is a significant historic paleontology site. In 1838, William Estaugh Hopkins uncovered large bones in a marl pit in which he was digging. Hopkins displayed the bones at his home, Birdwood; and these bones sparked the interest of a visitor, William Foulke. In 1858, Foulke dug from the marl pit the first full skeleton of a dinosaur found in North America, Hadrosaurus foulkii. The skeleton was assembled in 1868 and is still displayed at Philadelphia Academy of Natural Sciences. A replica of "Haddy" stands in the center of town.
In 1875, Haddonfield became the first community to secede from Haddon Township and become a self-governing borough. Haddonfield is noted for its historic homes, quaint shops, and legions of lawyers. As a legal center for southern New Jersey, the town houses the offices of more than 390 attorneys.
Haddonfield is home to the second oldest volunteer fire company in continuous service in the United States. Haddon Fire Company No. 1 was established as as Friendship Fire Company on March 8, 1764, by 26 townsmen. Each member was to furnish two leather buckets while the company supplied six ladders and three fire hooks.