In 1889 the area now known as Cambridgeshire was covered by four small counties, and from 1894 a network of urban and rural districts was formed:
In 1965 Cambridgeshire and the Isle of Ely were merged into one county, Cambridgeshire & Isle of Ely, while Huntingdonshire and the Soke of Peterborough were also merged, becoming one county, Huntingdon & Peterborough. Thorney Rural District was transferred from the Isle of Ely to Huntingdon & Peterborough.
In 1974 Further reorganisation saw all four earlier counties amalgamated into one county, Cambridgeshire. This was administered through six District Councils: City of Cambridge, City of Peterborough, East Cambridgeshire, Fenland, Huntingdonshire, and South Cambridgeshire. In 1998 Peterbrough became a unitary authority, effectively restoring self-government to the Soke of Peterborough.