With its resources of coal and easy access to railways, Dearham is part of Cumberland's former
coal mining industry. It saw its population increase from 515 in 1821 to 2,598 in 1891 due to the expansion of coal mining. However, with the decline of deep mining and, later, open cast working, the coal industry ceased to be a source of employment in the area. Historically, Dearham was in the Workington division of the County of Cumberland, in the ward of Allerdale below Derwent. It belonged to the Derwent
Petty sessional division, Cockermouth Union and the
County Court district of Cockermouth and Workington. The village also belongs to the rural deanery of Maryport, the
Archdeacon of West Cumberland and the
Diocese of Carlisle. ==Governance==