Piru, CA has a population of 1,950 and is the 11,173rd largest city in the United States. The population density is 693 per sq mi which is 198% higher than the California average and 665% higher than the national average. The median age in Piru is 34 which is approximately 6% lower than the California average of 36. In Piru, 60% of the population over 15 years of age are married, 34% speak English and 65% speak Spanish. 64% of Piru residents were born in California, 5% were born out of state, 0% were born outside of the United States and 31% were foreign born.