Bismarck, IL has a population of 611 and is the 18,332nd largest city in the United States. The population density is 822 per sq mi which is 270% higher than the Illinois average and 807% higher than the national average. The median age in Bismarck is 45 which is approximately 20% higher than the Illinois average of 37. In Bismarck, 69% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 92% of Bismarck residents were born in Illinois, 8% were born out of state, 0% were born outside of the United States and 0% were foreign born.
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The population density in Bismarck is 270% higher than Illinois.
The median age in Bismarck is 20% higher than Illinois.
In Bismarck 97.87% of the population is White.
In Bismarck 0.00% of the population is Black or African American.