Hidden Meadows, CA has a population of 3,648 and is the 7,854th largest city in the United States. The population density is 554 per sq mi which is 138% higher than the California average and 511% higher than the national average. The median age in Hidden Meadows is 53 which is approximately 48% higher than the California average of 36. In Hidden Meadows, 71% of the population over 15 years of age are married, 94% speak English and 2% speak Spanish. 51% of Hidden Meadows residents were born in California, 36% were born out of state, 2% were born outside of the United States and 11% were foreign born.