Derbyshire was divided into six civil divisions:

High Peak Hundred (North West)
Scarsdale Hundred (North East)
Wirksworth Wapentake (West)
Appletree Hundred (South West)
Morleston Hundred (South East)
Reppington Hundred (South)

'At the time of the Norman Survey, the land ... was divided among seventeen proprietors:-

Two feudal courts, which most towns and villages were under the jurisdiction of, remained. They were 'less expensive and more expeditious than proceeding in the courts of Westminster':

1. Court of the Duchy of Lancaster
   The court pleas held at Tutbury and at Sudbury (for the Appletree hundred). Presided over by a steward. Dealt with debts and damages under forty shillings, labourer's hire, servant's wages etc.
   
   
2. Peverel Court
   Dealt with small debts. Held at Lenton, NTT and presided over by a steward.

The county sent two members to parliament - 'a privilege, which it is ascertained, it enjoyed since the twenty-third of Edward I'.

The assizes were held twice yearly - in the spring and autumn - at Derby.
Epiphany, Easter and Michaelmas county sessions were also held at Derby: the Midsummer at Chesterfield.
Derbyshire is in the Midland circuit with respect to the common judiciary.

In ecclesiastical concerns in 1811, Derbyshire formed part of the diocese of Lichfield and Coventry and was divided into one archdeaconry and five deaneries^[1] as follows:

The Deanery of Ashbourn
The Deanery of Castillar^[2]
The Deanery of Chesterfield
The Archdeaconry of Derby
The Deanery of Derby
The Deanery of Repington

The County Town was: The Town of Derby

Notes on the above:

^[1] Davies is quite specific with these names, and his chapter headings group the parishes accordingly. The Lysons, some six years later, differ slightly from Davies. They record the parishes that Davies recorded as part of The Archdeaconry of Derby under the High Peak Deanery. Later directories place them under the rural deaneries of Bakewell, Eyam and Glossop.

^[2]The Deanery of Castillar did not take its name from a Derbyshire town or village. Its origins are from the Mediaeval Latin castellaris 'precinct of jurisdiction of a castle' and the deanery was named from Tutbury Castle St.
Cameron, K. (1959) 'The Place Names of Derbyshire', English Place Name Society Volume XXXIX, Cambridge University Press, p.24 .