Mt. Juliet is a city located in western Wilson County, Tennessee. A suburb of Nashville, it is approximately 17 miles east of downtown Nashville. Mt. Juliet is located mostly between two major national east-west routes, Interstate 40 and U.S. Route 70. As of the 2015 special census, the city has a total population of 28,156. Mt. Juliet is the largest city in Wilson County. The official city charter has the name listed as Mt. Juliet, however the United States Postal Service lists the name as Mount Juliet.