Delft Colony, CA has a population of 103 and is the 26,836th largest city in the United States. The population density is 1,569 per sq mi which is 575% higher than the California average and 1632% higher than the national average. The median age in Delft Colony is 17 which is approximately 54% lower than the California average of 36. In Delft Colony, 55% of the population over 15 years of age are married, 0% speak English and 100% speak Spanish. 32% of Delft Colony residents were born in California, 55% were born out of state, 0% were born outside of the United States and 13% were foreign born.