From the Wikipedia page 
South Jutland County (Danish: Sønderjyllands Amt) is a former county (Danish: amt) on the south-central portion of the Jutland Peninsula in southern Denmark.
The county was formed on 1 April, 1970, comprising the former counties of Aabenraa (E), Haderslev (N), Sønderborg (SE), and Tønder (SW). The county was abolished effective 1 January, 2007, when the Region of Southern Denmark was formed.
Following the reunification of the region with Denmark, the Church of Denmark elevated Haderslev to a diocese in 1923 and divided the region between the dioceses of Ribe (W) and Haderslev (E). This arrangement remains in effect.