Marion County, Alabama Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 38th-largest in Alabama
The population of Marion County, Alabama is 29,190 as of the 2023 American Community Survey, making it the 38th-largest county in Alabama. The median household income is $50,714, the median home value is $104,300, and the median age is 43.8.
The population of Marion County has declined 4.9% since 2010 (30,822 → 29,323), a -0.36% annualized rate.
29,190
Population
-0.36%
Annual growth
39
People / sq mi
$50,714
Median Income
$104,300
Median Home Value
Marion County covers 742 sq mi of land at 39.3 people per square mile.
About Marion County, AL
Educational attainment is the headline number in Marion County: 12.8% of adults 25 and older have a four-year degree. Marion County is a county in Alabama with a population of 29,190. It ranks #38 among counties in Alabama by population.
Earnings trail the nation, with the median household making $50,714, below the US median of $78,538. Poverty runs at 11.7%, below the national 12.4%. Property is affordable here, the median home worth $104,300, with typical rent around $583.
Marion County is among the least college-educated US counties, at 12.8% — below the national 35.0%. Home-based work is uncommon, at 3.2%, below the national 14.0%, and the average commute runs about 26 minutes each way.
Marion County Population History (2010-2024)
The county of Marion County had a population of 30,822 in 2010 and 29,323 in 2024, a -4.9% growth over 14 years. The peak was 30,822 in 2010. Average annual growth rate: -0.35%.
29,323
Population (2024)
30,822
Population (2010)
30,822
Peak (2010)
-0.35%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 30,822 |
| 2011 | 30,661 |
| 2012 | 30,495 |
| 2013 | 30,236 |
| 2014 | 30,215 |
| 2015 | 30,137 |
| 2016 | 29,958 |
| 2017 | 29,825 |
| 2018 | 29,776 |
| 2019 | 29,826 |
| 2020 | 29,175 |
| 2021 | 28,972 |
| 2022 | 29,171 |
| 2023 | 29,279 |
| 2024 | 29,323 |
Race & Ethnicity
| White | 91.4% |
| Black or African American | 3.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.7% |
| Two or More Races | 0.0% |
Age & Sex
43.8
Median Age
50.6%
Female
49.4%
Male
21.1%
Age 65+
Age Distribution
Children (under 15): 16.8% · Seniors (65+): 21.1%
Income & Poverty
| Median household income | $50,714$-11,313 vs state |
| Mean household income | $66,253 |
| Per-capita income | $26,555 |
| Poverty rate | 11.7%+0.4% vs state |
| Unemployment rate | 3.1% |
| Employment-to-population | 47.6% |
Top Industries by Employment
The largest employment sector in Marion County is professional & business services, accounting for 24.3% of workers.
How residents commute
0.0%
Drive alone
0.8%
Carpool
88.7%
Public transit
3.2%
Work from home
26.4 min
Avg commute
Housing
$104,300$-90,800 vs state
Median home value
$583
Median rent
75.2%
Homeownership rate
14,156
Total housing units
76.8%
Occupied
23.2%
Vacant
24.8%
Renter-occupied
Social & access
89.8%
With health insurance
87.4%
With broadband internet
29.2%
Foreign-born
6.7%
Veterans (18+)
26.8%
With a disability
98.1%
Speak language other than English at home
Education
82.1%
High School+
12.8%
Bachelor's+
Largest cities in Alabama
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County rankings
Frequently Asked Questions
Marion County, Alabama has a population of 29,190 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 38th-largest county in Alabama. Population density is 39 people per square mile.
The population of Marion County has declined 4.9% since 2010 (30,822 → 29,323), a -0.36% annualized rate.
The median household income in Marion County, Alabama is $50,714, with mean (average) household income of $66,253 and per-capita income of $26,555. 11.7% of residents live below the federal poverty level.
In Marion County, the largest racial and ethnic groups are White (91.4%), Black or African American (3.6%), Hispanic or Latino (1.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Marion County, Alabama is 43.8 years. Residents are 50.6% female and 49.4% male.
The median home value in Marion County is $104,300 and median monthly rent is $583. 75.2% of occupied housing units are owner-occupied. The county has 14,156 total housing units, 23.2% of which are vacant.
The largest employment sector in Marion County, Alabama is professional, scientific, and management services, employing 24.3% of workers. The unemployment rate is 3.1%.
Huntsville is among the largest cities associated with Marion County, Alabama, with a population of 218,814.
Marion County, AL Climate
Marion County, AL has an average annual temperature of 15.6°C (60°F) and receives about 1510 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
15.6°C
Avg Temp
1510
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 4° / 40° | 137 mm |
| February | 7° / 44° | 131 mm |
| March | 11° / 52° | 167 mm |
| April | 15° / 60° | 140 mm |
| May | 20° / 67° | 142 mm |
| June | 24° / 75° | 102 mm |
| July | 26° / 78° | 120 mm |
| August | 25° / 78° | 93 mm |
| September | 22° / 72° | 108 mm |
| October | 16° / 61° | 87 mm |
| November | 11° / 51° | 126 mm |
| December | 6° / 43° | 157 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, AL
The most comfortable months to visit Marion County, AL are typically September, June and May, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°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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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.