Okawville, IL has a population of 1,620 and is the 12,265th largest city in the United States. The population density is 790 per sq mi which is 255% higher than the Illinois average and 772% higher than the national average. The median age in Okawville is 36 which is approximately 4% lower than the Illinois average of 37. In Okawville, 58% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 75% of Okawville residents were born in Illinois, 22% were born out of state, 2% were born outside of the United States and 1% were foreign born.