Princeton is an unincorporated place in Alabama, United States. It is within Jackson County and situated on Alabama State Route 65 in the upper Paint Rock Valley. Skyline lies a little more than 7 miles toward the east on the Cumberland Plateau, and the Alabama-Tennessee state line passes a few miles toward the north. It comes with post office using Zip code 35766. Elevation of Princeton is 646 feet. As of 2016 census, the community had a total population of 137 with density of 4 people per square mile. Princeton ethnicity comprises of 88.32% white, 0.00% dark, 0.00% are asian, 0.00% are local american, and 0.00% claim 'Other. The average family unit size is 1.61 individuals. 11.11% of individuals are married, with siblings. 44.44% have siblings, but not yet married. Famous country music songwriter Curly Putman is a homegrown talent of Princeton.