Kincaid, IL has a population of 1,697 and is the 11,995th largest city in the United States. The population density is 2,081 per sq mi which is 836% higher than the Illinois average and 2197% higher than the national average. The median age in Kincaid is 35 which is approximately 5% lower than the Illinois average of 37. In Kincaid, 58% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 89% of Kincaid residents were born in Illinois, 10% were born out of state, 2% were born outside of the United States and 0% were foreign born.