Cobb, CA has a population of 1,122 and is the 14,447th largest city in the United States. The population density is 225 per sq mi which is 3% lower than the California average and 149% higher than the national average. The median age in Cobb is 41 which is approximately 13% higher than the California average of 36. In Cobb, 69% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 76% of Cobb residents were born in California, 20% were born out of state, 0% were born outside of the United States and 3% were foreign born.