Port Neches is a city in Jefferson County, Texas, United States. The population was 13,692 at the 2020 census, up from 13,040 at the 2010 census. It is part of the Beaumont–Port Arthur metropolitan area.

The Place known as Port Neches was similar to inhabited by tribes of the coastal-dwelling Karankawa and Atakapa Native Americans. Smith’s Bluff (the forward-looking site of Sun Oil and Union Oil of California riverside property) and Grigsby’s Bluff (now Port Neches) were the isolated two tall land bluffs upon the Neches River south of Beaumont, whose state is believed to have been derived from the Caddo word “Nachawi”, meaning “wood of the bow”, after Spanish settlers called it Río Neches. Before 1780, Grigsby’s Bluff, specifically that share of Port Neches hurriedly east of Port Neches Park, had been a Native American town for at least 1,500 years, at first of the Karankawa tribe, whose 7-foot (210 cm) skeletons were often found in the burial mounds there; and after 1650 of the Nacazils, a sub-tribe of the Attakapas, who were a quick and stocky people previously their extinction virtually 1780. As of 1841, there were six large burial mounds at Grigsby’s Bluff, size approximately 60 feet (18 m) wide, 20 feet (6.1 m) tall, and 100 yards (91 m) long, consisting entirely of clam and sea shells, skeletons, pottery shards, and further Native American artifacts. Between 1841 and 1901, all six of the mounds disappeared, a outcome of human actions. Grigsby’s Bluff became a read out office in 1859 (there was moreover a addition and sawmill there), but the office was discontinued in 1893.

Port Neches was the site of Fort Grigsby, a set of Civil War-era defenses expected to End a Union advance occurring the Neches River. The fort was constructed in October 1862 and forlorn sometime after July 1863. Its guns, munitions, and stores were moved to the then-unfinished Fort Griffin, the site of the Second Battle of Sabine Pass, often attributed as the most one-sided Confederate victory of the American Civil War.

A entrepreneur of Port Neches was Will Block Sr., born on August 2, 1870. In 2003, his son, W. T. Block Jr., was appointed a Knight of the Royal Order of Orange-Nassau for his put it on in reconstructing the chronicles of Dutch settlers in the area.