Hamilton County, Tennessee Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 4th-largest in Tennessee
The population of Hamilton County, Tennessee is 370,913 as of the 2023 American Community Survey, making it the 4th-largest county in Tennessee. The median household income is $72,568, the median home value is $282,100, and the median age is 39.5.
The population of Hamilton County has grown 14.5% since 2010 (337,235 → 386,256), a +0.97% annualized rate.
370,913
Population
+0.97%
Annual growth
684
People / sq mi
$72,568
Median Income
$282,100
Median Home Value
Hamilton County covers 542 sq mi of land at 684.1 people per square mile.
About Hamilton County, TN
Hamilton County stands apart on settlement density — it is among the most densely settled of US counties, at roughly 684 people per square mile. Hamilton County is a county in Tennessee with a population of 370,913. That makes it one of the ten largest counties in Tennessee in the country, at #4 by population.
The typical household earns $72,568 a year, below the US median of $78,538. About 8.4% of residents live below the federal poverty level, below the national 12.4%. The median home value is $282,100, with typical rent around $1,163.
College attainment is above the local norm at 37.0%, above the national 35.0%. A solid 12.9% of workers are based at home, below the national 14.0%, and the average commute runs about 22 minutes each way.
That density explains much of the rest of the profile in Hamilton County: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Hamilton County Population History (2010-2024)
The county of Hamilton County had a population of 337,235 in 2010 and 386,256 in 2024, a 14.5% growth over 14 years. The peak was 386,256 in 2024. Average annual growth rate: 0.98%.
386,256
Population (2024)
337,235
Population (2010)
386,256
Peak (2024)
0.98%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 337,235 |
| 2011 | 341,179 |
| 2012 | 345,828 |
| 2013 | 349,234 |
| 2014 | 350,972 |
| 2015 | 353,985 |
| 2016 | 358,165 |
| 2017 | 361,362 |
| 2018 | 364,626 |
| 2019 | 367,776 |
| 2020 | 367,891 |
| 2021 | 369,678 |
| 2022 | 375,861 |
| 2023 | 381,272 |
| 2024 | 386,256 |
Race & Ethnicity
| White | 71.1% |
| Black or African American | 17.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.0% |
Age & Sex
39.5
Median Age
51.5%
Female
48.5%
Male
18.1%
Age 65+
Age Distribution
Children (under 15): 17.6% · Seniors (65+): 18.1%
Income & Poverty
| Median household income | $72,568+$5,471 vs state |
| Mean household income | $103,813 |
| Per-capita income | $43,484 |
| Poverty rate | 8.4%-1.5% vs state |
| Unemployment rate | 2.7% |
| Employment-to-population | 61.3% |
Top Industries by Employment
The largest employment sector in Hamilton County is professional & business services, accounting for 22.2% of workers.
How residents commute
0.7%
Drive alone
1.6%
Carpool
75.0%
Public transit
12.9%
Work from home
21.9 min
Avg commute
Housing
$282,100+$25,300 vs state
Median home value
$1,163
Median rent
64.3%
Homeownership rate
165,605
Total housing units
91.4%
Occupied
8.6%
Vacant
35.7%
Renter-occupied
Social & access
90.4%
With health insurance
94.7%
With broadband internet
38.3%
Foreign-born
6.9%
Veterans (18+)
14.2%
With a disability
91.0%
Speak language other than English at home
Education
91.1%
High School+
37.0%
Bachelor's+
Largest cities in Tennessee
Other counties in Tennessee
Part of Tennessee
Metro areas in Tennessee
County rankings
Common questions about Hamilton County, TN
Frequently Asked Questions
Hamilton County, Tennessee has a population of 370,913 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 4th-largest county in Tennessee. Population density is 684 people per square mile.
The population of Hamilton County has grown 14.5% since 2010 (337,235 → 386,256), a +0.97% annualized rate.
The median household income in Hamilton County, Tennessee is $72,568, with mean (average) household income of $103,813 and per-capita income of $43,484. 8.4% of residents live below the federal poverty level.
In Hamilton County, the largest racial and ethnic groups are White (71.1%), Black or African American (17.6%), Hispanic or Latino (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Hamilton County, Tennessee is 39.5 years. Residents are 51.5% female and 48.5% male.
The median home value in Hamilton County is $282,100 and median monthly rent is $1,163. 64.3% of occupied housing units are owner-occupied. The county has 165,605 total housing units, 8.6% of which are vacant.
The largest employment sector in Hamilton County, Tennessee is professional, scientific, and management services, employing 22.2% of workers. The unemployment rate is 2.7%.
Nashville-Davidson is among the largest cities associated with Hamilton County, Tennessee, with a population of 684,298.
Hamilton County, TN Climate
Hamilton County, TN has an average annual temperature of 15.2°C (59°F) and receives about 1435 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
15.2°C
Avg Temp
1435
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 4° / 39° | 135 mm |
| February | 6° / 43° | 127 mm |
| March | 10° / 51° | 161 mm |
| April | 15° / 59° | 117 mm |
| May | 20° / 67° | 120 mm |
| June | 24° / 74° | 103 mm |
| July | 26° / 78° | 126 mm |
| August | 25° / 77° | 94 mm |
| September | 22° / 71° | 110 mm |
| October | 16° / 60° | 87 mm |
| November | 10° / 50° | 123 mm |
| December | 6° / 42° | 132 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Hamilton County, TN
The most comfortable months to visit Hamilton County, TN are typically September, May and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near -2°C low). March is usually the wettest month.
Where to stay near Hamilton County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.