National Counties Building Society

The National Counties Building Society is a building society in the UK, which has its head office in Epsom, Surrey. It is a member of the Building Societies Association. At December 2022, the Society had total assets of more than £2.4 billion.

Founded as the Fourth Post Office Mutual Society in 1896, it was renamed as National Counties in 1972 and its membership no longer limited to Post Office staff. Mostly a postal and online based building society, it has one branch in Epsom.

On 14 July 2014 the society founded the Family Building Society. This was the first building society to launch in the United Kingdom since the Ecology Building Society opened in 1981.