Deopham's name is of Anglo-Saxon origin and derives from the Old English for a homestead close to a deep body of water, likely the nearby Sea Mere.

[3] RAF Deopham Green opened in 1943 for use by the United States Army Air Forces during the Second World War.

[5] Deopham's parish church is dedicated to Saint Andrew and dates at its earliest from the late-Fourteenth Century.

The village's national constituency is Mid Norfolk which has been represented by the Conservative Party's George Freeman MP since 2010.

Deopham's war memorial is two marble plaques topped with a crown and cross inside St. Andrew's Church.