Princeton is a city in Patoka Township, Gibson County, Indiana, United States. The population was 8,644 at the 2010 census, and it is part of the greater Evansville, Indiana, Metropolitan Area. The city is the county seat of and the largest city in Gibson County.
In 1800 the Indiana Territory was created with Vincennes (Knox County) as its capital. The rich farmlands in the southwest of the territory with access to the Ohio River attracted many pioneers and settlers to the area, one of whom was an Irish immigrant named William Prince. Born in 1772, he immigrated to America twenty-two years later. He would become a Gibson County Commissioner and the county seat of Princeton is named after him.
The year 1813 saw the move of the territorial capital east from Vincennes to Corydon and the creation of Gibson County. Gibson had previously been part of the vast Knox County which covered all the land of southwestern Indiana, bordered by the Wabash and Ohio Rivers. By early 1814, settlers to this area were asking for a "seat of justice," or county seat. Captain William Prince was one of four commissioners who located the seat at the half-way stand on the Evansville and Vincennes stage line.