Highgrove, CA has a population of 4,537 and is the 6,890th largest city in the United States. The population density is 1,409 per sq mi which is 506% higher than the California average and 1456% higher than the national average. The median age in Highgrove is 29 which is approximately 20% lower than the California average of 36. In Highgrove, 40% of the population over 15 years of age are married, 54% speak English and 46% speak Spanish. 65% of Highgrove residents were born in California, 9% were born out of state, 1% were born outside of the United States and 25% were foreign born.