Union Park is a census-designated place (CDP) in Orange County, Florida, United States.

[4] According to the United States Census Bureau, the CDP has a total area of 7.8 km2 (3.0 mi2), of which 7.7 km2 (3.0 mi2) is land and 0.1 km2 (0.04 mi2) (0.99%) is water.

As of the census[2] of 2000, there were 10,191 people, 3,644 households, and 2,507 families residing in the CDP.

The ancestral population are German (12.3%), Irish (10.5%), English (8.1%), United States (6.8%), Italian (6.6%) and Polish (3.2%).

10.2% of the community's population is foreign born (6.4% Latin America, 1.8% Asia).

17.3% of all households were made up of individuals, and 3.6% had someone living alone who was 65 years of age or older.