Marion County Population

1830–2026

7,736

2026 projection

2.7% since 2020 (increase)

02K4K6K8K10K12K1850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Marion County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20267,736+600.78%
20257,676+600.79%
20247,616+1291.72%
20237,487+330.44%
20227,454+260.35%
20217,428-1011.34%
20207,529-88410.51%
20198,413+210.25%
20188,392-460.55%
20178,438-520.61%

Showing 10 of 34 years.

Marion County Demographics

41.9median age

Median age

Female42.4 yrs
Male41.4 yrs

Adults

5,990
1,637 seniors (65+) · 27% of adults4,353 other adults

Sex

Female 51.8% · 3,886Male 48.2% · 3,623

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 75 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Marion County Income

$51,667median household income

Median household income

$51,667

Half of households earn more, half earn less

Median earnings

$41,679

Typical yearly pay for a worker 25 or older.

Poverty rate

20.9%

About 1 in 5 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Marion County Marital Status

51% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married51%53%49%
Never married29%29%28%
Divorced10%9%12%
Widowed9%6%11%
Separated2%3%<1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201