Mount Juliet had an estimated 45,172 people on July 1, 2025, up 15% since the 2020 census and 91% since 2010, the Census Bureau says. Median age: 39.3.
Last checked Oct. 17, 2026. Figures come from the U.S. Census Bureau: the 2010 and 2020 census counts, the Vintage 2025 city population estimates and the 2020-2024 American Community Survey five-year estimates.
The Census Bureau estimates that 45,172 people lived in Mount Juliet on July 1, 2025. That is up 15% from the 39,289 counted in the 2020 census, and nearly double the 23,671 counted in 2010. The city added an estimated 5,883 people in five years. Wilson County grew faster still, to an estimated 175,033.
Where the numbers come from
- Mount Juliet QuickFacts: census.gov/quickfacts
- Detailed tables: 2020-2024 ACS profile, Mount Juliet
- Census Bureau questions: contact the bureau
- City planning data: City of Mt. Juliet GIS, 615-754-2552
Population over time
| Year | Population | Source |
|---|---|---|
| 2010 | 23,671 | 2010 census |
| 2020 | 39,289 | 2020 census |
| 2021 | 40,810 | Census estimate, July 1 |
| 2022 | 42,649 | Census estimate, July 1 |
| 2023 | 43,449 | Census estimate, July 1 |
| 2024 | 44,550 | Census estimate, July 1 |
| 2025 | 45,172 | Census estimate, July 1 |
The 2010s were the boom: a 66% increase in 10 years. Growth since 2020 has been slower, between about 600 and 1,800 people a year by the bureau’s estimates; the latest year added 622.
Other counts you will see. The city’s website cites 40,289 residents from a 2024 special census, and the Mt. Juliet Police Department lists 45,172 as the state-certified population as of July 1, 2025, the same figure as the federal estimate.
Who lives here
From the 2020-2024 American Community Survey five-year estimates:
| Measure | Mount Juliet | Wilson County | Tennessee |
|---|---|---|---|
| Median age | 39.3 | 39.8 | 38.9 |
| Under 5 | 5.5% | 6.0% | 5.8% |
| 65 and older | 13.2% | 15.9% | 17.1% |
| Households | 15,960 | 59,139 | 2,824,277 |
| Average household size | 2.63 | 2.66 | 2.45 |
| Median household income | $107,068 | $95,839 | $69,595 |
| Per capita income | $55,220 | $46,888 | $39,437 |
| People below poverty level | 6.0% | 8.0% | 13.8% |
| Bachelor’s degree or higher (25+) | 49.5% | 37.8% | 31.1% |
Housing
| Measure | Mount Juliet | Wilson County |
|---|---|---|
| Housing units | 16,952 | 63,031 |
| Owner-occupied homes | 72.1% | 77.0% |
| Median home value (owners’ estimate) | $460,100 | $428,000 |
| Median gross rent | $2,011 | $1,486 |
Home values in the survey are owners’ own estimates collected over five years. For current market values, see home prices.
Mount Juliet and its neighbors
| Place | 2020 census | July 2025 estimate | Median household income |
|---|---|---|---|
| Mount Juliet | 39,289 | 45,172 | $107,068 |
| Hendersonville | 61,753 | 64,266 | $97,200 |
| Gallatin | 44,431 | 54,590 | $77,518 |
| Lebanon | 38,431 | 53,412 | $72,848 |
| La Vergne | 38,719 | 42,146 | $81,313 |
| Goodlettsville | 17,789 | 17,506 | $70,758 |
| Wilson County | 147,737 | 175,033 | $95,839 |
Mount Juliet has the highest median household income of its neighbors. Lebanon, the county seat about nine miles east, passed Mount Juliet in population during the 2020s by the bureau’s estimates.
How to read these numbers
- Census counts (2010, 2020) are full counts as of April 1.
- Population estimates are the bureau’s yearly figures for July 1, revised each year.
- ACS five-year estimates are survey results pooled over 2020 to 2024 and carry margins of error; small differences between places may not be meaningful.
What this means for you
- Mount Juliet is a city of about 45,000, and the bureau’s estimates show it still growing every year.
- It is wealthier and more highly educated than the county and the state.
- The city’s road and sewer projects are listed in road construction.
Related: schools, moving to Mount Juliet and history and landmarks.
Frequently asked questions
What is the population of Mount Juliet, Tennessee?
The Census Bureau estimates 45,172 people lived in Mount Juliet on July 1, 2025. The 2020 census counted 39,289.
How fast is Mount Juliet growing?
Mount Juliet grew from 23,671 people in 2010 to 39,289 in 2020, a 66% jump, and added an estimated 5,883 more by July 2025, up 15% since the 2020 count.
What is the median household income in Mount Juliet?
$107,068, according to the Census Bureau’s 2020-2024 American Community Survey five-year estimates, compared with $95,839 for Wilson County and $69,595 for Tennessee.
Is Mount Juliet bigger than Lebanon?
Not anymore by the estimates. Lebanon was estimated at 53,412 on July 1, 2025, ahead of Mount Juliet’s 45,172; Lebanon has grown 39% since 2020.
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