where is orange park?
Sponsored Topics. Orange Park is a town in Clay County, Florida, USA, and a suburb of Jacksonville. The population was 8,412 at the 2010 census. The name Orange Park is additionally applied to a wider area of northern Clay County outside the town limits, covering such communities as Fleming Island, Lakeside, and Bellair-Meadowbrook Terrace, making it one of Jacksonville's most populous suburbs.