Henry, IL has a population of 2,348 and is the 10,161st largest city in the United States. The population density is 1,344 per sq mi which is 505% higher than the Illinois average and 1384% higher than the national average. The median age in Henry is 46 which is approximately 24% higher than the Illinois average of 37. In Henry, 63% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 85% of Henry residents were born in Illinois, 13% were born out of state, 1% were born outside of the United States and 1% were foreign born.
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The population density in Henry is 505% higher than Illinois.
The median age in Henry is 24% higher than Illinois.
In Henry 96.93% of the population is White.
In Henry 0.17% of the population is Black or African American.