Belknap, IL has a population of 54 and is the 28,086th largest city in the United States. The population density is 51 per sq mi which is 77% lower than the Illinois average and 44% lower than the national average. The median age in Belknap is 43 which is approximately 14% higher than the Illinois average of 37. In Belknap, 53% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 67% of Belknap residents were born in Illinois, 28% were born out of state, 6% were born outside of the United States and 0% were foreign born.
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The population density in Belknap is 77% lower than Illinois.
The median age in Belknap is 14% higher than Illinois.
In Belknap 94.44% of the population is White.
In Belknap 0.00% of the population is Black or African American.