Orion, IL has a population of 2,013 and is the 10,992nd largest city in the United States. The population density is 2,196 per sq mi which is 888% higher than the Illinois average and 2324% higher than the national average. The median age in Orion is 44 which is approximately 18% higher than the Illinois average of 37. In Orion, 64% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 75% of Orion residents were born in Illinois, 24% were born out of state, 1% were born outside of the United States and 1% were foreign born.