As of the 2020 United States census, Mount Juliet has a population of approximately 39,289 people.

The official city charter has the name listed as Mt.

Juliet was struck by an EF3 tornado that destroyed hundreds of homes, along with West Wilson Middle School and Stoner Creek Elementary.

Recent annexations along the east side of South Rutland Road as well as a land swap with the City of Lebanon for the Bel Air at Beckwith project (southeast quadrant of I-40/Beckwith Road interchange) have increased the city's geographical area to approximately 21.78 square miles (56.4 km2).

As of the 2020 United States census, there were 39,289 people, 11,969 households, and 9,412 families residing in the city.

As of the census of 2010,[17] there were 23,671 people, 8,562 households, and 6,674 families residing in the city.

17.96% of all households were made up of individuals, and 5.49% had someone living alone who was 65 years of age or older.

As of the census[18] of 2000, there were 12,366 people, 4,341 households, and 3,576 families residing in the city.

There were 4,673 housing units at an average density of 287.6 per square mile (111.0/km2).

13.8 percent of all households were made up of individuals, and 3.3% had someone living alone who was 65 years of age or older.

The medium value of owner-occupied housing units is $238,700 and 7% of the population and 1.7% of families were below the poverty line.

The northwestern portion of the city is zoned to Green Hill High School, while areas south of I-40 are zoned to Wilson Central High School.

[21] Interstate 40 and U.S. Route 70 (Lebanon Road) run east/west through Mt.

Juliet serves as a stop on the WeGo Star commuter rail service from Nashville to Lebanon, operating over freight carrier Nashville and Eastern Railroad.

The WeGo Star has stations in downtown Nashville, Donelson, Hermitage, Mt.

The WeGo Star also runs trains for Tennessee Titans games, New Year's Eve, Wilson County Fair, other events downtown Nashville.

Juliet contains Nashville International Airport, located 9 miles (14 km) west of the city via Interstate 40.

Juliet has a police station near Charlie Daniels Park on the city's northwest side.

Juliet Police Department Animal Control Division opened a shelter on Industrial Drive.

Juliet’s park system, as well as an 8 acre tract of land dedicated to youth soccer.

Juliet League, Inc. Football and cheerleading are run by Mt.