Potter Valley, CA has a population of 413 and is the 20,700th largest city in the United States. The population density is 102 per sq mi which is 56% lower than the California average and 13% higher than the national average. The median age in Potter Valley is 41 which is approximately 13% higher than the California average of 36. In Potter Valley, 51% of the population over 15 years of age are married, 89% speak English and 10% speak Spanish. 62% of Potter Valley residents were born in California, 29% were born out of state, 0% were born outside of the United States and 9% were foreign born.