Hollowayville, IL has a population of 52 and is the 28,128th largest city in the United States. The population density is 1,096 per sq mi which is 393% higher than the Illinois average and 1110% higher than the national average. The median age in Hollowayville is 47 which is approximately 26% higher than the Illinois average of 37. In Hollowayville, 51% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 87% of Hollowayville residents were born in Illinois, 13% were born out of state, 0% were born outside of the United States and 0% were foreign born.