Westwood, MO has a population of 289 and is the 22,690th largest city in the United States. The population density is 474 per sq mi which is 449% higher than the Missouri average and 423% higher than the national average. The median age in Westwood is 55 which is approximately 43% higher than the Missouri average of 38. In Westwood, 79% of the population over 15 years of age are married, 88% speak English and 9% speak Spanish. 60% of Westwood residents were born in Missouri, 32% were born out of state, 0% were born outside of the United States and 8% were foreign born.