Demographics of Hamilton County, Tennessee

Hamilton County, Tennessee had 390,833 people on July 1, 2025, by the Census Bureau’s estimate: +22,947 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Hamilton County, in four figures

390,833
Population: July 1, 2025, Vintage 2025 estimate.; +6.2%
Change since July 2020: +22,947 people.; 39.5 ±0.3
Median age: ACS 2020–⁠2024.; $76,183 ±$1,947
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Hamilton County, Tennessee's population grew 6.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Hamilton County, Tennessee's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Hamilton County, Tennessee's population grew 6.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Hamilton County, Tennessee's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	367,886	100.0	100.0
2021	369,725	100.5	100.2
2022	375,738	102.1	100.7
2023	381,087	103.6	101.6
2024	387,268	105.3	102.5
2025	390,833	106.2	103.1

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Population of Hamilton County, Tennessee on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	367,886	+1,046	+55	+10	+995
2021	369,725	+1,839	−111	+185	+1,500
2022	375,738	+6,013	−89	+918	+5,005
2023	381,087	+5,349	+308	+1,187	+3,807
2024	387,268	+6,181	+464	+2,652	+3,033
2025	390,833	+3,565	+474	+927	+2,140

Age, 2020–2024

The median age is 39.5 ±0.3: for men 38.1 ±0.4 and for women 40.8 ±0.3. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Hamilton County by age, ACS 2020–2024
Age	People	Share	Tennessee	United States
Under 5	21,907 ±34	5.8% ±<0.1	5.8% ±<0.1	5.6% ±<0.1
5 to 17	57,404 ±1,377	15.3% ±0.4	16.4% ±0.1	16.3% ±<0.1
18 to 24	31,776 ±1,028	8.4% ±0.3	8.9% ±0.1	9.1% ±<0.1
25 to 44	102,896 ±1,496	27.4% ±0.4	26.7% ±0.1	26.9% ±<0.1
45 to 64	93,123 ±1,642	24.8% ±0.4	25.2% ±0.1	24.8% ±<0.1
65 and over	69,086 ±1,724	18.4% ±0.5	17.1% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $76,183 ±$1,947, and income per person $45,341 ±$896, in 2024 dollars. The median is $69,595 ±$429 in Tennessee and $80,734 ±$166 in the United States.

Households by income

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Households in Hamilton County by income, ACS 2020–2024
Household income	Households	Share	Tennessee	United States
Under $25,000	22,971 ±1,354	14.9% ±0.9	16.6% ±0.2	14.6% ±<0.1
$25,000 to $49,999	27,950 ±1,566	18.1% ±1.0	19.4% ±0.2	16.7% ±<0.1
$50,000 to $74,999	25,206 ±1,290	16.3% ±0.8	17.3% ±0.2	15.5% ±<0.1
$75,000 to $99,999	19,329 ±1,130	12.5% ±0.7	13.2% ±0.2	12.6% ±<0.1
$100,000 to $149,999	28,163 ±1,199	18.3% ±0.8	16.8% ±0.2	17.5% ±<0.1
$150,000 to $199,999	12,905 ±929	8.4% ±0.6	7.7% ±0.1	9.6% ±<0.1
$200,000 or more	17,657 ±963	11.5% ±0.6	9.0% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Hamilton County by age, ACS 2020–2024
Age	Below poverty	Rate	Tennessee	United States
All ages	48,017 ±2,716	13.1% ±0.7	13.8% ±0.2	12.5% ±0.1
Under 18	15,826 ±1,341	20.2% ±1.6	18.8% ±0.4	16.1% ±0.1
18 to 59	22,687 ±1,523	11.5% ±0.8	12.7% ±0.2	11.6% ±0.1
60 and over	9,504 ±878	10.4% ±0.9	11.4% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Hamilton County, ACS 2020–2024
Measure	Hamilton County	Tennessee	United States
Housing units	168,013 ±178	3,143,670 ±903	143,775,355 ±10,234
Occupied	91.8% ±0.6	89.8% ±0.2	89.9% ±0.1
Vacant	8.2% ±0.6	10.2% ±0.2	10.1% ±0.1
Owner occupied	63.9% ±1.1	66.9% ±0.3	65.2% ±0.3
Renter occupied	36.1% ±1.1	33.1% ±0.3	34.8% ±0.1
Median home value	$312,800 ±$5,741	$286,700 ±$1,492	$332,700 ±$236
Median gross rent	$1,253 ±$28	$1,189 ±$7	$1,413 ±$2
Median year built	1982 ±2	1987 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Hamilton County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Tennessee	United States
Hispanic or Latino	30,267 ±0	8.0% ±<0.1	7.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	257,073 ±739	68.3% ±0.2	71.0% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	63,574 ±1,228	16.9% ±0.3	15.4% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	7,773 ±380	2.1% ±0.1	1.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	108 to 338	< 0.1% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 96	0% to < 0.1%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	1,868 ±554	0.5% ±0.1	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	15,367 ±1,495	4.1% ±0.4	3.7% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Hamilton County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Tennessee	United States
Born in the state	202,814 ±3,466	53.9% ±0.9	57.2% ±0.2	57.3% ±<0.1
Born in another state	144,377 ±3,549	38.4% ±0.9	35.7% ±0.2	26.9% ±<0.1
Born a citizen outside the states	4,131 ±581	1.1% ±0.2	1.0% ±<0.1	1.7% ±<0.1
Born abroad	24,870 ±1,521	6.6% ±0.4	6.1% ±0.1	14.1% ±<0.1
Naturalized citizens	9,227 ±930	2.5% ±0.2	2.4% ±0.1	7.4% ±<0.1
Not citizens	15,643 ±1,264	4.2% ±0.3	3.7% ±0.1	6.8% ±<0.1

Hamilton County among the counties of Tennessee

4th of 95 by population, July 2025. Every one is listed on the Tennessee page.

Counties of Tennessee near Hamilton County in population, July 2025
County	July 2025	Change since 2020
Shelby County	910,226	−2.1%
Davidson County	745,904	+4.2%
Knox County	511,453	+6.4%
Hamilton County	390,833	+6.2%
Rutherford County	386,352	+12.5%
Williamson County	272,061	+9.0%
Montgomery County	249,935	+12.9%
Sumner County	215,538	+9.2%
Wilson County	175,033	+17.7%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026