Demographics of Marion County, Tennessee

Marion County, Tennessee had 29,804 people on July 1, 2025, by the Census Bureau’s estimate: +930 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.

Marion County, in four figures

29,804
Population: July 1, 2025, Vintage 2025 estimate.; +3.2%
Change since July 2020: +930 people.; 43.8 ±0.4
Median age: ACS 2020–⁠2024.; $61,824 ±$4,484
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.

Marion County, Tennessee's population grew 3.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Marion 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

Marion County, Tennessee's population grew 3.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Marion 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	28,874	100.0	100.0
2021	28,923	100.2	100.2
2022	29,061	100.6	100.7
2023	29,393	101.8	101.6
2024	29,761	103.1	102.5
2025	29,804	103.2	103.1

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Population of Marion 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	28,874	+33	−14	0	+42
2021	28,923	+49	−162	+2	+203
2022	29,061	+138	−190	+17	+304
2023	29,393	+332	−166	+33	+457
2024	29,761	+368	−181	+47	+494
2025	29,804	+43	−180	−6	+228

Age, 2020–2024

The median age is 43.8 ±0.4: for men 42.6 ±1.1 and for women 46.1 ±0.8. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Marion County by age, ACS 2020–2024
Age	People	Share	Tennessee	United States
Under 5	1,529 ±97	5.2% ±0.3	5.8% ±<0.1	5.6% ±<0.1
5 to 17	4,402 ±296	15.0% ±1.0	16.4% ±0.1	16.3% ±<0.1
18 to 24	2,041 ±234	7.0% ±0.8	8.9% ±0.1	9.1% ±<0.1
25 to 44	6,945 ±422	23.7% ±1.4	26.7% ±0.1	26.9% ±<0.1
45 to 64	8,214 ±374	28.1% ±1.3	25.2% ±0.1	24.8% ±<0.1
65 and over	6,119 ±443	20.9% ±1.5	17.1% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $61,824 ±$4,484, and income per person $32,016 ±$1,973, 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 Marion County by income, ACS 2020–2024
Household income	Households	Share	Tennessee	United States
Under $25,000	2,404 ±339	20.3% ±2.8	16.6% ±0.2	14.6% ±<0.1
$25,000 to $49,999	2,530 ±339	21.3% ±2.8	19.4% ±0.2	16.7% ±<0.1
$50,000 to $74,999	2,092 ±299	17.6% ±2.5	17.3% ±0.2	15.5% ±<0.1
$75,000 to $99,999	1,645 ±266	13.9% ±2.2	13.2% ±0.2	12.6% ±<0.1
$100,000 to $149,999	1,755 ±252	14.8% ±2.1	16.8% ±0.2	17.5% ±<0.1
$150,000 to $199,999	895 ±250	7.5% ±2.1	7.7% ±0.1	9.6% ±<0.1
$200,000 or more	548 ±158	4.6% ±1.3	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 Marion County by age, ACS 2020–2024
Age	Below poverty	Rate	Tennessee	United States
All ages	4,724 ±1,018	16.3% ±3.5	13.8% ±0.2	12.5% ±0.1
Under 18	1,207 ±299	20.8% ±4.8	18.8% ±0.4	16.1% ±0.1
18 to 59	2,356 ±618	15.8% ±4.0	12.7% ±0.2	11.6% ±0.1
60 and over	1,161 ±286	14.1% ±3.4	11.4% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Marion County, ACS 2020–2024
Measure	Marion County	Tennessee	United States
Housing units	14,058 ±30	3,143,670 ±903	143,775,355 ±10,234
Occupied	84.4% ±2.2	89.8% ±0.2	89.9% ±0.1
Vacant	15.6% ±2.3	10.2% ±0.2	10.1% ±0.1
Owner occupied	78.5% ±3.0	66.9% ±0.3	65.2% ±0.3
Renter occupied	21.5% ±3.0	33.1% ±0.3	34.8% ±0.1
Median home value	$195,200 ±$12,162	$286,700 ±$1,492	$332,700 ±$236
Median gross rent	$853 ±$109	$1,189 ±$7	$1,413 ±$2
Median year built	1985 ±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 Marion County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Tennessee	United States
Hispanic or Latino	728 ±0	2.5% ±<0.1	7.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	26,334 ±88	90.0% ±0.3	71.0% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	871 ±265	3.0% ±0.9	15.4% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	2 to 84	< 0.1% to 0.3%	1.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 74	0% to 0.3%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 26	0% to 0.1%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 51	0% to 0.2%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,222 ±264	4.2% ±0.9	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 Marion County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Tennessee	United States
Born in the state	20,200 ±705	69.1% ±2.4	57.2% ±0.2	57.3% ±<0.1
Born in another state	8,582 ±686	29.3% ±2.3	35.7% ±0.2	26.9% ±<0.1
Born a citizen outside the states	50 to 192	0.2% to 0.7%	1.0% ±<0.1	1.7% ±<0.1
Born abroad	167 to 527	0.6% to 1.8%	6.1% ±0.1	14.1% ±<0.1
Naturalized citizens	27 to 175	0.1% to 0.6%	2.4% ±0.1	7.4% ±<0.1
Not citizens	79 to 413	0.3% to 1.4%	3.7% ±0.1	6.8% ±<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%.

Marion County among the counties of Tennessee

51st of 95 by population, July 2025. Every one is listed on the Tennessee page.

Counties of Tennessee near Marion County in population, July 2025
County	July 2025	Change since 2020
Weakley County	33,261	+1.1%
Claiborne County	33,229	+3.6%
Henry County	32,896	+2.3%
Giles County	31,433	+3.6%
Obion County	30,067	−2.3%
Marion County	29,804	+3.2%
White County	29,612	+7.9%
Carroll County	29,200	+2.7%
Henderson County	28,518	+2.5%
Hardin County	27,983	+3.8%
Macon County	27,663	+9.5%

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