Knightsen, CA has a population of 1,606 and is the 12,308th largest city in the United States. The population density is 192 per sq mi which is 17% lower than the California average and 112% higher than the national average. The median age in Knightsen is 44 which is approximately 22% higher than the California average of 36. In Knightsen, 69% of the population over 15 years of age are married, 87% speak English and 11% speak Spanish. 76% of Knightsen residents were born in California, 15% were born out of state, 0% were born outside of the United States and 8% were foreign born.