Grayville, IL has a population of 1,886 and is the 11,373rd largest city in the United States. The population density is 886 per sq mi which is 288% higher than the Illinois average and 878% higher than the national average. The median age in Grayville is 42 which is approximately 13% higher than the Illinois average of 37. In Grayville, 57% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 58% of Grayville residents were born in Illinois, 41% were born out of state, 0% were born outside of the United States and 1% were foreign born.