Westwood, CA has a population of 1,685 and is the 12,031st largest city in the United States. The population density is 310 per sq mi which is 33% higher than the California average and 242% higher than the national average. The median age in Westwood is 40 which is approximately 10% higher than the California average of 36. In Westwood, 59% of the population over 15 years of age are married, 91% speak English and 4% speak Spanish. 74% of Westwood residents were born in California, 19% were born out of state, 4% were born outside of the United States and 3% were foreign born.