Marblehead
Unincorporated community
Marblehead Location of Marblehead within Illinois Show map of Illinois Marblehead Marblehead (the United States) Show map of the United States
Coordinates: 39°50′23″N 91°22′07″W / 39.83972°N 91.36861°W / 39.83972; -91.36861
Country	United States
State	Illinois
County	Adams
Township	Fall Creek
Time zone	UTC-6 (CST)
• Summer (DST)	UTC-5 (CDT)

Marblehead is an unincorporated community in Adams County, Illinois, United States, just south of Quincy. Illinois State Route 57 is the main auxiliary route through the town and travels north to the business district of Quincy or south to Interstate 72 (near Hannibal, Missouri).

The community is part of the Quincy, IL–MO Micropolitan Statistical Area.

Lake Marblehead

Marblehead is prone to flooding and during the Flood of 2008, the town was flooded with water from the Mississippi River. A temporary (and satirically named) "Lake Marblehead" was formed when the flood plain flooded.^[1]