Marion County vs Volusia County
Two neighbouring counties in Florida, compared on population, size, income and housing. They share 4.5 mi of border.
Marion County
Florida
Volusia County
Florida
Both outlines are drawn at true relative size. Volusia County spans about 100.4 km at its widest.
Side by side
| Measure | Marion County | Difference | Volusia County |
|---|---|---|---|
| Population | 442,660 | -27.0% | 606,573 |
| Change since 2020 | 17.3% | +8.2 pp | 9.1% |
| Land area | 1,588 sq mi | +44.2% | 1,101 sq mi |
| Population density | 279 per sq mi | -49.4% | 551 per sq mi |
| Median household income | $61,010 | -12.9% | $70,044 |
| Median home value | $243,100 | -22.3% | $313,000 |
| Median age | 47.9 | +3.0% | 46.5 |
| Households | 164,881 | -31.8% | 241,881 |
| Housing units | 188,277 | -33.3% | 282,109 |
Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026; US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. The difference column is computed here: the first county's figure against the second, expressed as a percentage of the second. The change-since-2020 row is the exception: two growth rates differ in percentage points (pp), not percent. Retrieved 30 August 2026.
What the numbers say
- Volusia County holds about 1.4 times the population of Marion County: 606,573 against 442,660.
- Marion County covers more ground, at 1,588 square miles against 1,101.
- Volusia County is the more crowded of the two, at 551 people per square mile against 279.
- Median household income is higher in Volusia County, by 9,034 dollars a year.
- Since 2020, Marion County has grown by 17.3% and Volusia County has grown by 9.1%.
- They share 4.5 mi of common border, which the Census Bureau publishes in its county adjacency file and which almost no other county reference presents.
Full pages
Want a different pair? Compare any two of the 3,144 US counties.
Rebuilt from source data 30 August 2026. How these figures are produced.