Niantic, IL has a population of 530 and is the 19,194th largest city in the United States. The population density is 496 per sq mi which is 123% higher than the Illinois average and 447% higher than the national average. The median age in Niantic is 45 which is approximately 19% higher than the Illinois average of 37. In Niantic, 66% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 84% of Niantic residents were born in Illinois, 13% were born out of state, 2% were born outside of the United States and 1% were foreign born.
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The population density in Niantic is 123% higher than Illinois.
The median age in Niantic is 19% higher than Illinois.
In Niantic 92.45% of the population is White.
In Niantic 0.00% of the population is Black or African American.