Campo, CA has a population of 3,049 and is the 8,731st largest city in the United States. The population density is 130 per sq mi which is 44% lower than the California average and 43% higher than the national average. The median age in Campo is 37 which is approximately 3% higher than the California average of 36. In Campo, 56% of the population over 15 years of age are married, 86% speak English and 13% speak Spanish. 73% of Campo residents were born in California, 17% were born out of state, 0% were born outside of the United States and 10% were foreign born.