Oak Glen, CA has a population of 786 and is the 16,731st largest city in the United States. The population density is 53 per sq mi which is 77% lower than the California average and 42% lower than the national average. The median age in Oak Glen is 41 which is approximately 13% higher than the California average of 36. In Oak Glen, 55% of the population over 15 years of age are married, 71% speak English and 27% speak Spanish. 80% of Oak Glen residents were born in California, 18% were born out of state, 0% were born outside of the United States and 2% were foreign born.