Cave Creek, AZ has a population of 5,275 and is the 6,221st largest city in the United States. The population density is 140 per sq mi which is 143% higher than the Arizona average and 54% higher than the national average. The median age in Cave Creek is 56 which is approximately 52% higher than the Arizona average of 37. In Cave Creek, 66% of the population over 15 years of age are married, 93% speak English and 2% speak Spanish. 24% of Cave Creek residents were born in Arizona, 65% were born out of state, 1% were born outside of the United States and 11% were foreign born.