Fleming Island is an unincorporated community in Clay County

Clay County, Florida

Clay County is a county located in the U.S. state of Florida. As of 2010, the population was 190,895. Its county seat is Green Cove Springs, Florida. Clay County is part of the Greater Jacksonville Metropolitan area.- History :...

, Florida

Florida

Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It is located 15 miles southwest of Jacksonville

Jacksonville, Florida

Jacksonville is the largest city in the U.S. state of Florida in terms of both population and land area, and the largest city by area in the contiguous United States. It is the county seat of Duval County, with which the city government consolidated in 1968...

, on the western side of the St. Johns River

St. Johns River

The St. Johns River is the longest river in the U.S. state of Florida and its most significant for commercial and recreational use. At long, it winds through or borders twelve counties, three of which are the state's largest. The drop in elevation from the headwaters to the mouth is less than ;...

, off US 17

U.S. Route 17 in Florida

U.S. Route 17 in Florida is a north–south United States Highway. It runs from the Punta Gorda, Florida Metropolitan Statistical Area northeast to the Greater Jacksonville Metropolitan Area....

. Fleming Island's zip code became 32003 in 2004 separating it from Orange Park.
It is primarily a bedroom community of nearby Jacksonville. Major developments include Eagle Harbor, Pace Island and Fleming Island Plantation. The only high school located on Fleming Island is Fleming Island High School, which opened in 2003.