Marion County, Tennessee Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Marion County, TN Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
-
C
Health Below average
-
C
Income Below average
-
F
Education Well below average
Source: Map AI Methodology
Population: density and quick facts
| Metric | Marion County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| Population | 29,249 | 7,058,506 | 337,468,954 |
| Population density (per sq mi) | 57.1 | 167.5 | 86.4 |
| Population growth (%/yr) | 0.38% | 0.94% | 0.59% |
| Median age | 42.5 | 37.3 | 37.3 |
| Households | 11,869 | 2,819,839 | 130,235,071 |
Population in Marion County grew by 4.5% from 2009 to 2024, reaching 29,249 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Marion County is Gen X, aged 45–60, at 22.3% of residents. That is 2.0 points above Tennessee as a whole.
- Gen Z 13–28 5,523 18.9% -2.5 pts
- Millennials 29–44 5,653 19.3% -2.2 pts
- Gen X 45–60 6,520 22.3% +2.0 pts
- Boomers 61–79 6,094 20.8% +3.5 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Tennessee, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.3% of the people living in Marion County and men 49.7%.
- Women 50.3% Tennessee 50.9%
- Men 49.7% Tennessee 49.1%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Marion County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Marion County has a the economy index of C, which means it is somewhat prosperous.
| Metric | Marion County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| Median household income | $61,839 | $69,901 | $80,455 |
| Income growth (%/yr) | 5.05% | 5.19% | 4.80% |
| Unemployment rate | 7.1% | 4.6% | 5.2% |
The median household income in Marion County is about 12% lower than in Tennessee.
Housing
| Metric | Marion County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| Median home price | $160,237 | $255,786 | $248,835 |
| Median rent | $853 | $1,188 | $1,407 |
| Homeownership rate | 78.5% | 66.9% | 65.2% |
The median home price in Marion County is about 15.7 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $853 per month for that long.
Commute Time & Mobility
Commuters in Marion County spend about 63 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 263 hours, about 11.0 full days, spent commuting.
| Metric | Marion County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 31.6 | 22.4 | 22.4 |
| Round-trip commute (min) | 63.1 | 44.8 | 44.8 |
| Yearly time spent (hours) | 263 | 187 | 187 |
| Estimated yearly cost | $8,154 | $5,785 | $5,790 |
| Work from home | 13.1% | 12.9% | 15.0% |
| Highway traffic (vehicles/day) | 10,975 | 9,259 | 8,813 |
| Local road traffic (vehicles/day) | 1,654 | 1,225 | 1,355 |
Fastest commutes among counties in
Tennessee:
Dyer County (15.9 min), Henry County (16.7 min), Obion County (17.1 min).
Slowest:
Cannon County (33.3 min), Union County (33.2 min), Fayette County (33.1 min).
The average commute time in Marion County is 32 minutes, longer than the 22 minutes in Tennessee.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Marion County has a education index of F, which means it scores poorly in education.
| Metric | Marion County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 14.1% | 27.5% | 31.6% |
| Average household size | 2.45 | 2.45 | 2.53 |
Highest education index among counties in
Tennessee:
Williamson County (0.4), Davidson County (0.3), Knox County (0.3).
Lowest:
Lake County (0.1), Van Buren County (0.1), Lauderdale County (0.1).
Health
Marion County has a health index of C, which means it is somewhat healthy.
| Metric | Marion County | Tennessee Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 74.4 | 74.8 | 78.3 |
| Self-rated poor health | 18.9% | 19.5% | 16.3% |
| Smokers | 25.6% | 25.1% | 19.0% |
Highest health index among counties in
Tennessee:
Williamson County (0.8), Rutherford County (0.8), Wilson County (0.8).
Lowest:
Clay County (0.8), Lake County (0.8), Hancock County (0.8).
Marion County, TN Compared With Nearby Counties
How Marion County, TN compares with the 2 counties closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Marion County, TN | 29,249 | $61,839 #3/3 | $160,237 #3/3 | 31.6 min #3/3 |
| Hamilton County, TN | 375,392 | $76,240 | $311,675 | 20.8 min |
| Franklin County, TN | 44,097 | $62,739 | $361,888 | 20.9 min |
Frequently Asked Questions
Common questions about Marion County, Tennessee.
How big is Marion County, Tennessee by population?
About 29,249 people live in Marion County, Tennessee, in 11,869 households of 2.4 people on average. The median age is 42.5, so residents are older than the U.S. median of 37.3 by about 5 years.
Is Marion County, Tennessee urban or rural?
Averaged over its land area, Marion County, Tennessee has 57 people per square mile, a density typical of rural areas. That is about 66% of the U.S. average of 86.
How affordable is housing in Marion County, Tennessee?
The median home costs 2.6 times the median household income ($160,237 against $61,839), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $853 a month takes about 17% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is unemployment high in Marion County, Tennessee?
Unemployment in Marion County, Tennessee is 7.1%, well above the U.S. rate of 5.2%, so job seekers may face more competition than elsewhere.
How educated are people in Marion County, Tennessee?
14.1% of adults in Marion County, Tennessee hold a bachelor's degree or higher (about 1 in 7), well below the U.S. share of 31.6%.
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