Marion County, Tennessee Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 51st-largest in Tennessee
The population of Marion County, Tennessee is 29,010 as of the 2023 American Community Survey, making it the 51st-largest county in Tennessee. The median household income is $58,103, the median home value is $173,600, and the median age is 43.7.
The population of Marion County has grown 5.7% since 2010 (28,227 → 29,826), a +0.39% annualized rate.
29,010
Population
+0.39%
Annual growth
58
People / sq mi
$58,103
Median Income
$173,600
Median Home Value
Marion County covers 502 sq mi of land at 57.8 people per square mile.
About Marion County, TN
Homeownership is the standout figure in Marion County: 79.8% of homes are owner-occupied, higher than the national rate. Marion County is a county in Tennessee with a population of 29,010.
The typical household here earns about $58,103, below the US median of $78,538. Roughly 12.9% of residents fall below the poverty line, close to the national 12.4%. Median home value is $173,600, with typical rent around $840.
College attainment is 16.5%, below the national 35.0%. Remote work is below the national 14.0% at 9.4%, and the average commute runs about 33 minutes each way.
The ownership rate anchors the housing story in Marion County, and tends to move with the age structure and home-value figures above.
Marion County Population History (2010-2024)
The county of Marion County had a population of 28,227 in 2010 and 29,826 in 2024, a 5.7% growth over 14 years. The peak was 29,826 in 2024. Average annual growth rate: 0.40%.
29,826
Population (2024)
28,227
Population (2010)
29,826
Peak (2024)
0.40%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 28,227 |
| 2011 | 28,107 |
| 2012 | 28,237 |
| 2013 | 28,337 |
| 2014 | 28,416 |
| 2015 | 28,407 |
| 2016 | 28,375 |
| 2017 | 28,425 |
| 2018 | 28,593 |
| 2019 | 28,878 |
| 2020 | 28,905 |
| 2021 | 28,960 |
| 2022 | 29,101 |
| 2023 | 29,458 |
| 2024 | 29,826 |
Race & Ethnicity
| White | 91.3% |
| Black or African American | 2.8% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.0% |
| Two or More Races | 0.0% |
Age & Sex
43.7
Median Age
50.3%
Female
49.7%
Male
20.5%
Age 65+
Age Distribution
Children (under 15): 16.6% · Seniors (65+): 20.5%
Income & Poverty
| Median household income | $58,103$-8,994 vs state |
| Mean household income | $73,573 |
| Per-capita income | $29,313 |
| Poverty rate | 12.9%+3.0% vs state |
| Unemployment rate | 4.1% |
| Employment-to-population | 49.1% |
Top Industries by Employment
The largest employment sector in Marion County is manufacturing, accounting for 19.1% of workers.
How residents commute
0.4%
Drive alone
1.4%
Carpool
76.4%
Public transit
9.4%
Work from home
33.1 min
Avg commute
Housing
$173,600$-83,200 vs state
Median home value
$840
Median rent
79.8%
Homeownership rate
13,837
Total housing units
83.3%
Occupied
16.7%
Vacant
20.2%
Renter-occupied
Social & access
90.2%
With health insurance
90.3%
With broadband internet
30.0%
Foreign-born
8.5%
Veterans (18+)
19.8%
With a disability
98.5%
Speak language other than English at home
Education
82.3%
High School+
16.5%
Bachelor's+
Largest cities in Tennessee
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County rankings
Frequently Asked Questions
Marion County, Tennessee has a population of 29,010 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 51st-largest county in Tennessee. Population density is 58 people per square mile.
The population of Marion County has grown 5.7% since 2010 (28,227 → 29,826), a +0.39% annualized rate.
The median household income in Marion County, Tennessee is $58,103, with mean (average) household income of $73,573 and per-capita income of $29,313. 12.9% of residents live below the federal poverty level.
In Marion County, the largest racial and ethnic groups are White (91.3%), Black or African American (2.8%), Hispanic or Latino (2.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Marion County, Tennessee is 43.7 years. Residents are 50.3% female and 49.7% male.
The median home value in Marion County is $173,600 and median monthly rent is $840. 79.8% of occupied housing units are owner-occupied. The county has 13,837 total housing units, 16.7% of which are vacant.
The largest employment sector in Marion County, Tennessee is manufacturing, employing 19.1% of workers. The unemployment rate is 4.1%.
Nashville-Davidson is among the largest cities associated with Marion County, Tennessee, with a population of 684,298.
Marion County, TN Climate
Marion County, TN has an average annual temperature of 14°C (57°F) and receives about 1519 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
14°C
Avg Temp
1519
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 3° / 37° | 139 mm |
| February | 5° / 41° | 133 mm |
| March | 10° / 49° | 168 mm |
| April | 14° / 57° | 127 mm |
| May | 18° / 64° | 131 mm |
| June | 22° / 72° | 105 mm |
| July | 24° / 76° | 133 mm |
| August | 24° / 75° | 98 mm |
| September | 21° / 69° | 113 mm |
| October | 14° / 58° | 96 mm |
| November | 9° / 49° | 131 mm |
| December | 5° / 41° | 145 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 Marion County, TN
The most comfortable months to visit Marion County, TN are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -2°C low). March is usually the wettest month.
Where to stay near Marion County
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Population, race, income, age, and trends across Tennessee
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.