Caston's name is of Anglo-Saxon origin and derives from the Old English for "Catt's farmstead or settlement".^[2]

In the Domesday Book, Caston is recorded as a settlement of 56 households in the hundred of Wayland. The village was divided between the estates of King William and William de Warenne.^[3]

The remains of a fifteenth century stone cross are mounted on the village green, this monument was originally larger and more ornately carved until it was smashed by Puritans during the seventeenth century.

During the sixteenth century, Caston was the residence of Edward Gilman, who was one of the earliest recorded ancestors of Abraham Lincoln.

Caston Windmill was built in the nineteenth century for Edward Wyer. Today, the mill is in private ownership and is Grade II listed.^[4]

According to the 2011 Census, Caston has a population of 443 residents living in 189 households.^[5]

Caston is located in the constituency of Mid Norfolk and is thus represented by George Freeman MP in Parliament.

Caston's Holy Cross is of Norman origin and was heavily restored during the fourteenth century.^[6]

Caston's War Memorial is located in the centre of the village green and takes the form of a stone Celtic cross. It lists the following names for the First World War:

• Second-Lieutenant Frederick C. Corley (1887–1918), 8th Battalion, Border Regiment
• Sergeant Edgar Hannant (1886–1917), 1st Battalion, Royal Norfolk Regiment
• Corporal Horace Tye (1888–1917), 13th Battalion, Essex Regiment
• Lance-Corporal Herbert Cooper (d.1917), 108th Company, Machine Gun Corps
• Private Leonard A. Tye (1896–1917), 7th Battalion, Bedfordshire Regiment
• Private Robert W. Reynolds (1893–1916), 8th (Winnipeg Rifles) Battalion, Canadian Army
• Private Reginald W. Partridge (1883–1915), 16th (Canadian Scottish) Battalion, Canadian Army
• Private John H. Lawes (1899–1918), 8th Battalion, Gloucestershire Regiment
• Private Richard Hannant (1871–1915), 8th Battalion, Middlesex Regiment
• Private Harry Cator (1892–1917), 1/5th Battalion, Royal Norfolk Regiment
• Private Harry Green (1877–1916), 8th Battalion, Royal Norfolk Regiment
• Private Edward J. Hunt (1887–1917), 9th Battalion, Royal Norfolk Regiment
• Private George W. Anthony (1991–1917), 4th Battalion, Northumberland Fusiliers
• Private Albert E. Reynolds (1897–1917), 5th Battalion, Northumberland Fusiliers
• Sapper James T. Bambridge (1878–1916), 4th (Provisional) Company, Royal Engineers

And, the following for the Second World War:

• Leading-Aircraftman Robert G. Curtis (1919–1945), Royal Air Force
• Gunner Reginald J. Lawes (1911–1943), 65th (Field) Regiment, Royal Artillery
• Yeoman Frederick H. Thorpe MiD (1909–1942), HMS Cleopatra