Marion County, Florida Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 18th-largest in Florida
The population of Marion County, Florida is 387,697 as of the 2023 American Community Survey, making it the 18th-largest county in Florida. The median household income is $58,535, the median home value is $220,800, and the median age is 48.2.
The population of Marion County has grown 29.4% since 2010 (331,341 → 428,905), a +1.86% annualized rate.
387,697
Population
+1.86%
Annual growth
244
People / sq mi
$58,535
Median Income
$220,800
Median Home Value
Marion County covers 1,588 sq mi of land at 244.1 people per square mile.
About Marion County, FL
Marion County is distinguished by its share of foreign-born residents, 48.0% of the population. With 387,697 residents, Marion County is a county in Florida. It ranks #18 among counties in Florida by population.
Median household income is $58,535, below the US median of $78,538. About 10.2% of residents live below the federal poverty level, below the national 12.4%. Median home value is $220,800, with typical rent around $1,174.
Degree attainment is mid-range for US counties: 22.4% of adults hold a four-year degree, below the national 35.0%. Remote work is below the national 14.0% at 10.1%, and the average commute runs about 26 minutes each way.
The large foreign-born share is a defining thread in Marion County, shaping language, household composition, and the labor force behind the economic figures above.
Marion County Population History (2010-2024)
The county of Marion County had a population of 331,341 in 2010 and 428,905 in 2024, a 29.4% growth over 14 years. The peak was 428,905 in 2024. Average annual growth rate: 1.87%.
428,905
Population (2024)
331,341
Population (2010)
428,905
Peak (2024)
1.87%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 331,341 |
| 2011 | 332,325 |
| 2012 | 333,945 |
| 2013 | 335,196 |
| 2014 | 338,165 |
| 2015 | 342,388 |
| 2016 | 347,958 |
| 2017 | 353,953 |
| 2018 | 359,630 |
| 2019 | 365,997 |
| 2020 | 377,464 |
| 2021 | 385,024 |
| 2022 | 396,661 |
| 2023 | 412,338 |
| 2024 | 428,905 |
Race & Ethnicity
| White | 71.7% |
| Black or African American | 12.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.4% |
| Two or More Races | 0.0% |
Age & Sex
48.2
Median Age
51.7%
Female
48.3%
Male
28.7%
Age 65+
Age Distribution
Children (under 15): 15.5% · Seniors (65+): 28.7%
Income & Poverty
| Median household income | $58,535$-13,176 vs state |
| Mean household income | $77,453 |
| Per-capita income | $32,513 |
| Poverty rate | 10.2%+1.3% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 45.8% |
Top Industries by Employment
The largest employment sector in Marion County is professional & business services, accounting for 21.8% of workers.
How residents commute
0.1%
Drive alone
0.6%
Carpool
77.1%
Public transit
10.1%
Work from home
26.3 min
Avg commute
Housing
$220,800$-104,200 vs state
Median home value
$1,174
Median rent
76.7%
Homeownership rate
183,453
Total housing units
87.1%
Occupied
12.9%
Vacant
23.3%
Renter-occupied
Social & access
87.8%
With health insurance
94.3%
With broadband internet
48.0%
Foreign-born
11.1%
Veterans (18+)
16.5%
With a disability
84.8%
Speak language other than English at home
Education
89.6%
High School+
22.4%
Bachelor's+
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Common questions about Marion County, FL
Frequently Asked Questions
Marion County, Florida has a population of 387,697 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 18th-largest county in Florida. Population density is 244 people per square mile.
The population of Marion County has grown 29.4% since 2010 (331,341 → 428,905), a +1.86% annualized rate.
The median household income in Marion County, Florida is $58,535, with mean (average) household income of $77,453 and per-capita income of $32,513. 10.2% of residents live below the federal poverty level.
In Marion County, the largest racial and ethnic groups are White (71.7%), Black or African American (12.6%), Hispanic or Latino (1.4%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Marion County, Florida is 48.2 years. Residents are 51.7% female and 48.3% male.
The median home value in Marion County is $220,800 and median monthly rent is $1,174. 76.7% of occupied housing units are owner-occupied. The county has 183,453 total housing units, 12.9% of which are vacant.
The largest employment sector in Marion County, Florida is professional, scientific, and management services, employing 21.8% of workers. The unemployment rate is 2.5%.
Jacksonville is among the largest cities associated with Marion County, Florida, with a population of 961,739.
Marion County, FL Climate
Marion County, FL has an average annual temperature of 20.9°C (70°F) and receives about 1292 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
20.9°C
Avg Temp
1292
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 14° / 56° | 88 mm |
| February | 15° / 58° | 85 mm |
| March | 18° / 64° | 102 mm |
| April | 20° / 68° | 70 mm |
| May | 24° / 74° | 99 mm |
| June | 26° / 79° | 181 mm |
| July | 27° / 81° | 170 mm |
| August | 27° / 80° | 169 mm |
| September | 26° / 79° | 139 mm |
| October | 22° / 72° | 65 mm |
| November | 18° / 64° | 60 mm |
| December | 15° / 58° | 64 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, FL
The most comfortable months to visit Marion County, FL are typically October, April and November, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 33°C high). The coldest is January (near 7°C low). June is usually the wettest month.
Where to stay near Marion County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.