How many people live in Seminole County, FL?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 494,600 people living in Seminole County, FL. That makes Seminole County the 13th-most populous county in Florida. It is home to 2.1% of people living in the state.
495K
population of Seminole County, FL (2024)
2.1%
County share of the Florida population (2024)
About 494,600 people lived in Seminole County, FL in 2024.
Population estimates, 2000–2024
What are Seminole County, FL’s age demographics?
About 85,400 Seminole County, FL residents are aged 65 and older in 2024. That represents 17.3% of its population. For comparison, the age group represents 21.8% of Florida’s population and 18% in the US overall.
Another 99,400 Seminole County residents, or 20.1% of the population, were children under 18. For comparison, the age group represents 19.3% of Florida’s population and 21.6% in the US overall.
A higher share of Seminole County, FL's population is aged 25–44 than the US as a whole.
Population estimates by age group, (2024)
What are Seminole County, FL’s racial and ethnic demographics?
Hispanic residents make up 25.4% of the Seminole County, FL population, higher than the national share of 20%.
In contrast, Seminole County’s non-Hispanic white population accounts for 53.9%, below the 57.5% nationwide, and the non-Hispanic Asian population makes up 5.9% of the county, compared with 6.5% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Seminole County, FL has a higher share of a non-Hispanic white population than Florida as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Seminole County, FL is Sanford with about 66,900 residents in 2024.
Cities and towns in Seminole County, FL ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Sanford | 66,919 |
| 2. | Altamonte Springs | 47,261 |
| 3. | Oviedo | 41,901 |
| 4. | Winter Springs | 39,822 |
| 5. | Casselberry | 31,650 |
| 6. | Longwood | 17,089 |
| 7. | Lake Mary | 16,989 |
| 8. | Balance of Seminole County | 232,974 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
