As of 2010, 67.43% of all residents spoke English as their first language, while 22.59% spoke Spanish, 2.44% French Creole (mostly Haitian Creole,) 1.23% Portuguese, 0.88% Vietnamese, 0.78% Indian languages (including Gujarati and Hindi,) 0.58% Tagalog, 0.53% Chinese, 0.50% French, and 0.45% of the population spoke Arabic as their mother language.
The county functions under a charter form of government.
The land that is Orange County was part of the first land to come up from below the Early Oligocene sea 33.9–28.4 million years ago and is known as Orange Island.
Orange County's Rock Spring location is a Pleistocene fossil-bearing area and has yielded a vast variety of birds and mammals including giant sloth, mammoth, camel, and the dire wolf dating around 1.1 million years ago. Johns County was organized as Mosquito County, and Enterprise was named its county seat. It was renamed as Orange County in 1845 when Florida became a state.
But this was part of a much larger story of KKK and other white attempts to suppress black voting in Ocoee and the state.
24.85% of all households were made up of individuals and 6.08% (1.71% male and 4.37% female) had someone living alone who was 65 years of age or older.
The average household size was 2.64 and the average family size was 3.19. For every 100 females age 18 and over, there were 94.9 males.
In 2010, 19.1% of the county's population was foreign born, with 43.8% being naturalized American citizens.
Of foreign-born residents, 68.9% were born in Latin America, 17.8% born in Asia, 8.1% were born in Europe, 3.0% born in Africa, 2.0% in North America, and 0.2% were born in Oceania.