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Seminole County, Florida facts for kids

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Seminole County, Florida
Seal of Seminole County, Florida
Map of Florida highlighting Seminole County
Location in the state of Florida
Map of the USA highlighting Florida
Florida's location in the U.S.
Founded April 25, 1913
Seat Sanford
Largest City Sanford
 - Total
 - Land
 - Water

345 sq mi (894 km²)
309 sq mi (800 km²)
36 sq mi (93 km²), 10.4%
 - (2015)
 - Density

1,372/sq mi (529.72/km²)
Time zone Eastern: UTC-5/-4
Named for: Seminole people

Seminole County (/ˈsɛmnl/, SEM-i-nohl) is a county in the state of Florida. As of the 2010 census, the population was 422,718. Its county seat and largest city is Sanford.

Seminole County is part of the Orlando-Kissimmee-Sanford, FL Metropolitan Statistical Area.


On July 21, 1821, two counties formed Florida: Escambia to the west and St. Johns to the east. In 1824, the area to the south of St. Johns County was designated Mosquito County, with its seat at Enterprise. The county's name was changed to Orange County in 1845 when Florida became a state, and over the next 70 years several other counties were created. Seminole County was one of the last to split.

Seminole County was created on April 25, 1913 out of the northern portion of Orange County by the Florida Legislature. It was named for the Seminole people who historically lived throughout the area. The name "Seminole" is thought to be derived from the Spanish word cimarron, meaning "wild" or "runaway."


According to the U.S. Census Bureau, the county has an area of 345 square miles (890 km2), of which 309 square miles (800 km2) is land and 36 square miles (93 km2) (10.4%) is water. It is Florida's fourth-smallest county by land area and third-smallest by total area.

Seminole County's location between Volusia County and Orange County has made it one of Florida's fastest-growing counties. The Greater Orlando Metropolitan District which includes Seminole, Osceola, and the surrounding counties of Lake and Orange counties, together with neighboring Volusia and Brevard counties create a viable, progressive and diverse setting for economic growth and residential development.

Adjacent counties


Historical population
Census Pop.
1920 10,986
1930 18,735 70.5%
1940 22,304 19.0%
1950 26,883 20.5%
1960 54,947 104.4%
1970 83,692 52.3%
1980 179,752 114.8%
1990 287,529 60.0%
2000 365,196 27.0%
2010 422,718 15.8%
Est. 2015 449,144 6.3%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2015

As of the census of 2000, there were 365,196 people, 139,572 households, and 97,281 families residing in the county. The U.S. Census Bureau estimates that the population of the County has grown to 394,878 by 2003. Current 2012 estimates put the population at more than 430,838. The population density was 1,185 people per square mile (458/km²). There were 147,079 housing units at an average density of 477 per square mile (184/km²). The racial makeup of the county was 82.4% White, 9.5% Black or African American, 0.3% Native American, 2.5% Asian, <0.1% Pacific Islander, 3.1% from other races, and 2.2% from two or more races. 11.2% of the population were Hispanic or Latino of any race.

There were 139,572 households out of which 33.9% had children under the age of 18 living with them, 54.3% were married couples living together, 11.5% had a female householder with no husband present, and 30.3% were non-families. 22.9% of all households were made up of individuals and 6.6% had someone living alone who was 65 years of age or older. The average household size was 2.59 and the average family size was 3.07. The Department of Education states that in 2003, school enrollment was approximately 72,630. As of 2006, the Seminole County School District was the 52nd largest in the nation.

2003 population is 394,878; 2003 school enrollment is 72,630.

Population was distributed with 25.4% under the age of 18, 8.4% from 18 to 24, 32.0% from 25 to 44, 23.6% from 45 to 64, and 10.6% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 95.90 males. For every 100 females age 18 and over, there were 92.90 males.

The median income for a household in the county was $49,326, and the median income for a family was $56,895. Males had a median income of $40,001 versus $28,217 for females. The per capita income for the county was $24,591. About 5.1% of families and 7.4% of the population were below the poverty line, including 8.6% of those under age 18 and 6.6% of those age 65 or over. As of March 2009, according to Workforce Central Florida, the unemployment rate for Seminole County is 9.2 percent.


The following reflects the latest year available for religious statistics, which was 2000.

  • Did not claim a religious affiliation - 230,901
  • Catholic - 60,191
  • Evangelical Protestant - 48,430
  • Mainline Protestant - 19,713
  • Other - 5,487
  • Orthodox - 474


Interstates and Expressways

Surface Roads

  • US 17.svg/US 92.svg US 17/US 92 (French Avenue/Orlando Drive)
  • Florida 46.svg SR 46
  • Florida 419.svg SR 419
  • Florida 426.svg SR 426
  • Florida 434.svg SR 434
  • Florida 436.svg SR 436


  • Orlando Sanford International Airport

Public Transportation

  • Lynx
  • SunRail



Census-designated places

Unincorporated communities

Images for kids

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