Barnhart, Missouri is a Census Designated Place (CDP) and is located in Jefferson County, in Zip Code 63012, about 30 minutes from Downtown St. Louis along Interstate 55.
The residents of Barnhart are served by the public Windsor C-1 School District. The district has the James E. Freer Elementary School located within the Barnhart area. Other schools of the district include the Windsor High School, the Windsor Middle School, the Windsor Intermediate School and the Windsor Elementary School, all located in Imperial Missouri.
Conveniently located for the residents of the communitiy is the Windsor Branch Library of the Jefferson County Library system. It is a public library located on Metropolitan Boulevard in Barnhart Missouri.