University City is an inner-ring suburb of the city of St. Louis in St. Louis County, in the U.S. state of Missouri. The population was measured at 35,065 by the 2020 census. The city is one of the older suburbs in the St. Louis area, having been a streetcar suburb in the late 19th and early 20th centuries; much historic architecture remains in the southern, older portion of the city, particularly along Delmar Boulevard.