Olivette, MO has a population of 7,830 and is the 4,777th largest city in the United States. The population density is 2,808 per sq mi which is 3150% higher than the Missouri average and 2999% higher than the national average. The median age in Olivette is 41 which is approximately 6% higher than the Missouri average of 38. In Olivette, 65% of the population over 15 years of age are married, 76% speak English and 6% speak Spanish. 52% of Olivette residents were born in Missouri, 26% were born out of state, 1% were born outside of the United States and 20% were foreign born.