Brevard County vs Seminole County
Two neighbouring counties in Florida, compared on population, size, income and housing. They share a single point of border.
Brevard County
Florida
Seminole County
Florida
Both outlines are drawn at true relative size. Brevard County spans about 107.8 km at its widest.
Side by side
| Measure | Brevard County | Difference | Seminole County |
|---|---|---|---|
| Population | 663,982 | +35.0% | 491,884 |
| Change since 2020 | 9.1% | +4.8 pp | 4.3% |
| Land area | 1,015 sq mi | +228.1% | 309.4 sq mi |
| Population density | 654 per sq mi | -58.9% | 1,590 per sq mi |
| Median household income | $78,476 | -8.5% | $85,761 |
| Median home value | $339,600 | -12.2% | $386,900 |
| Median age | 46.7 | +17.3% | 39.8 |
| Households | 257,695 | +37.6% | 187,248 |
| Housing units | 299,305 | +50.0% | 199,565 |
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
- Brevard County holds about 1.3 times the population of Seminole County: 663,982 against 491,884.
- Brevard County covers more ground, at 1,015 square miles against 309.4.
- Seminole County is the more crowded of the two, at 1,590 people per square mile against 654.
- Median household income is higher in Seminole County, by 7,285 dollars a year.
- Since 2020, Brevard County has grown by 9.1% and Seminole County has grown by 4.3%.
- They share a single point 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.