Royal City, WA has a population of 1,629 and is the 12,225th largest city in the United States. The population density is 1,223 per sq mi which is 1165% higher than the Washington average and 1250% higher than the national average. The median age in Royal City is 26 which is approximately 30% lower than the Washington average of 38. In Royal City, 55% of the population over 15 years of age are married, 14% speak English and 86% speak Spanish. 32% of Royal City residents were born in Washington, 14% were born out of state, 0% were born outside of the United States and 54% were foreign born.