Seminole County, Florida Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 13th-largest in Florida
The population of Seminole County, Florida is 474,912 as of the 2023 American Community Survey, making it the 13th-largest county in Florida. The median household income is $83,030, the median home value is $357,300, and the median age is 39.8.
The population of Seminole County has grown 16.9% since 2010 (423,072 → 494,605), a +1.12% annualized rate.
474,912
Population
+1.12%
Annual growth
1535
People / sq mi
$83,030
Median Income
$357,300
Median Home Value
Seminole County covers 309 sq mi of land at 1535.1 people per square mile.
About Seminole County, FL
Seminole County stands apart on settlement density — it is among the most densely settled of US counties, at roughly 1,535 people per square mile. With 474,912 residents, Seminole County is a county in Florida. It ranks #13 among counties in Florida by population.
Median household income is $83,030, above the US median of $78,538. Poverty is relatively low for US counties at 6.3%, below the national 12.4%. Real estate commands a premium here — a median home value of $357,300, with typical rent around $1,686.
The population is unusually well-credentialed for US counties — 42.4% of adults have a four-year degree, above the national 35.0%. Remote work is widespread — 19.2% of workers stay home, above the national 14.0%, and the average commute runs about 27 minutes each way.
That density explains much of the rest of the profile in Seminole County: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Seminole County Population History (2010-2024)
The county of Seminole County had a population of 423,072 in 2010 and 494,605 in 2024, a 16.9% growth over 14 years. The peak was 494,605 in 2024. Average annual growth rate: 1.12%.
494,605
Population (2024)
423,072
Population (2010)
494,605
Peak (2024)
1.12%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 423,072 |
| 2011 | 426,382 |
| 2012 | 430,626 |
| 2013 | 435,640 |
| 2014 | 441,583 |
| 2015 | 448,535 |
| 2016 | 456,266 |
| 2017 | 463,052 |
| 2018 | 468,195 |
| 2019 | 471,791 |
| 2020 | 471,472 |
| 2021 | 470,935 |
| 2022 | 481,084 |
| 2023 | 489,254 |
| 2024 | 494,605 |
Race & Ethnicity
| White | 62.7% |
| Black or African American | 11.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.2% |
| Two or More Races | 0.0% |
Age & Sex
39.8
Median Age
51.3%
Female
48.7%
Male
16.3%
Age 65+
Age Distribution
Children (under 15): 16.8% · Seniors (65+): 16.3%
Income & Poverty
| Median household income | $83,030+$11,319 vs state |
| Mean household income | $111,625 |
| Per-capita income | $44,349 |
| Poverty rate | 6.3%-2.6% vs state |
| Unemployment rate | 2.7% |
| Employment-to-population | 64.1% |
Top Industries by Employment
The largest employment sector in Seminole County is professional & business services, accounting for 21.3% of workers.
How residents commute
0.5%
Drive alone
1.0%
Carpool
69.8%
Public transit
19.2%
Work from home
27.2 min
Avg commute
Housing
$357,300+$32,300 vs state
Median home value
$1,686
Median rent
65.8%
Homeownership rate
197,167
Total housing units
94.0%
Occupied
6.0%
Vacant
34.2%
Renter-occupied
Social & access
90.4%
With health insurance
97.7%
With broadband internet
42.6%
Foreign-born
6.9%
Veterans (18+)
11.6%
With a disability
76.7%
Speak language other than English at home
Education
93.9%
High School+
42.4%
Bachelor's+
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Common questions about Seminole County, FL
Frequently Asked Questions
Seminole County, Florida has a population of 474,912 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 13th-largest county in Florida. Population density is 1535 people per square mile.
The population of Seminole County has grown 16.9% since 2010 (423,072 → 494,605), a +1.12% annualized rate.
The median household income in Seminole County, Florida is $83,030, with mean (average) household income of $111,625 and per-capita income of $44,349. 6.3% of residents live below the federal poverty level.
In Seminole County, the largest racial and ethnic groups are White (62.7%), Black or African American (11.9%), Hispanic or Latino (1.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Seminole County, Florida is 39.8 years. Residents are 51.3% female and 48.7% male.
The median home value in Seminole County is $357,300 and median monthly rent is $1,686. 65.8% of occupied housing units are owner-occupied. The county has 197,167 total housing units, 6.0% of which are vacant.
The largest employment sector in Seminole County, Florida is professional, scientific, and management services, employing 21.3% of workers. The unemployment rate is 2.7%.
Jacksonville is among the largest cities associated with Seminole County, Florida, with a population of 961,739.
Seminole County, FL Climate
Seminole County, FL has an average annual temperature of 21.7°C (71°F) and receives about 1261 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
21.7°C
Avg Temp
1261
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 15° / 59° | 61 mm |
| February | 16° / 60° | 79 mm |
| March | 19° / 65° | 88 mm |
| April | 21° / 70° | 55 mm |
| May | 24° / 75° | 87 mm |
| June | 26° / 80° | 161 mm |
| July | 27° / 81° | 177 mm |
| August | 27° / 81° | 185 mm |
| September | 26° / 80° | 169 mm |
| October | 23° / 74° | 91 mm |
| November | 19° / 67° | 57 mm |
| December | 16° / 61° | 51 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Seminole County, FL
The most comfortable months to visit Seminole County, FL are typically April, November and October, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 33°C high). The coldest is January (near 9°C low). August is usually the wettest month.
Where to stay near Seminole County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.