Darwin, CA has a population of 35 and is the 28,493rd largest city in the United States. The population density is 26 per sq mi which is 89% lower than the California average and 71% lower than the national average. The median age in Darwin is 72 which is approximately 100% higher than the California average of 36. In Darwin, 100% of the population over 15 years of age are married, 63% speak English and 0% speak Spanish. 14% of Darwin residents were born in California, 49% were born out of state, 0% were born outside of the United States and 37% were foreign born.