Eynesbury Hardwicke was historically part of Eynesbury parish. That parish was split in two on 1 April 1895;[2] the village of Eynesbury was incorporated into the town of St Neots.[3] Eynesbury Hardwicke parish was formed from the remaining 2,641 acres (10.7 km2) of countryside.[2]
Caldecote Manor, Eynesbury Hardwicke House[3] and the site of an abandoned village, Weald,[4] are in the former parish. It did not contain a parish church or settlement[3]—though by the time of its dissolution Eynesbury had expanded into the parish[5]—but it did have a parish council.[6]
The civil parish was abolished on 1 April 2010 and the area divided between Abbotsley and St Neots.[7]