Kelly Ridge, CA has a population of 2,751 and is the 9,245th largest city in the United States. The population density is 1,410 per sq mi which is 507% higher than the California average and 1456% higher than the national average. The median age in Kelly Ridge is 54 which is approximately 50% higher than the California average of 36. In Kelly Ridge, 62% of the population over 15 years of age are married, 95% speak English and 2% speak Spanish. 60% of Kelly Ridge residents were born in California, 32% were born out of state, 1% were born outside of the United States and 7% were foreign born.