Princeton, WI has a population of 1,201 and is the 14,025th largest city in the United States. The population density is 776 per sq mi which is 619% higher than the Wisconsin average and 757% higher than the national average. The median age in Princeton is 40 which is approximately 3% higher than the Wisconsin average of 39. In Princeton, 60% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 76% of Princeton residents were born in Wisconsin, 23% were born out of state, 0% were born outside of the United States and 1% were foreign born.