Lake County vs Marion County
Two neighbouring counties in Florida, compared on population, size, income and housing. They share 41 mi of border.
Lake County
Florida
Marion County
Florida
Both outlines are drawn at true relative size. Lake County spans about 106.5 km at its widest.
Side by side
| Measure | Lake County | Difference | Marion County |
|---|---|---|---|
| Population | 456,068 | +3.0% | 442,660 |
| Change since 2020 | 18.1% | +0.8 pp | 17.3% |
| Land area | 954 sq mi | -39.9% | 1,588 sq mi |
| Population density | 478 per sq mi | +71.3% | 279 per sq mi |
| Median household income | $73,161 | +19.9% | $61,010 |
| Median home value | $318,400 | +31.0% | $243,100 |
| Median age | 46.5 | -2.9% | 47.9 |
| Households | 164,497 | -0.2% | 164,881 |
| Housing units | 187,580 | -0.4% | 188,277 |
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
- Lake County holds slightly more than the population of Marion County: 456,068 against 442,660.
- Marion County covers more ground, at 1,588 square miles against 954.
- Lake County is the more crowded of the two, at 478 people per square mile against 279.
- Median household income is higher in Lake County, by 12,151 dollars a year.
- Since 2020, Lake County has grown by 18.1% and Marion County has grown by 17.3%.
- They share 41 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.