Royal Lakes, IL has a population of 134 and is the 26,060th largest city in the United States. The population density is 288 per sq mi which is 29% higher than the Illinois average and 218% higher than the national average. The median age in Royal Lakes is 48 which is approximately 28% higher than the Illinois average of 37. In Royal Lakes, 60% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 51% of Royal Lakes residents were born in Illinois, 49% were born out of state, 0% were born outside of the United States and 0% were foreign born.