Princeville, IL has a population of 1,999 and is the 11,034th largest city in the United States. The population density is 1,186 per sq mi which is 433% higher than the Illinois average and 1209% higher than the national average. The median age in Princeville is 40 which is approximately 6% higher than the Illinois average of 37. In Princeville, 62% of the population over 15 years of age are married, 94% speak English and 5% speak Spanish. 84% of Princeville residents were born in Illinois, 11% were born out of state, 1% were born outside of the United States and 4% were foreign born.