Cotati, CA has a population of 7,415 and is the 4,963rd largest city in the United States. The population density is 3,944 per sq mi which is 1597% higher than the California average and 4254% higher than the national average. The median age in Cotati is 36 which is approximately 1% higher than the California average of 36. In Cotati, 52% of the population over 15 years of age are married, 82% speak English and 13% speak Spanish. 67% of Cotati residents were born in California, 18% were born out of state, 0% were born outside of the United States and 15% were foreign born.