Sønderborg County () is a former

province A province is an administrative division within a country or sovereign state, state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire, Roman Empire's territorial possessions ou ...

Denmark Denmark is a Nordic countries, Nordic country in Northern Europe. It is the metropole and most populous constituent of the Kingdom of Denmark,, . also known as the Danish Realm, a constitutionally unitary state that includes the Autonomous a ...

, located on the island of

Als Amyotrophic lateral sclerosis (ALS), also known as motor neuron disease (MND) or—in the United States—Lou Gehrig's disease (LGD), is a rare, terminal neurodegenerative disorder that results in the progressive loss of both upper and low ...

and the easternmost part of

Southern Jutland Southern Jutland (; ) is the region south of the Kongeå in Jutland, Denmark and north of the Eider (river) in Schleswig-Holstein, Germany. The region north of the Kongeå is called . Both territories had their own ting assemblies in the Mi ...

. As of 2017 its population was 27,000.

History

Sønderborg was first established in 1256. After Denmark surrendered control over Schleswig to Prussia and the

Austrian Empire The Austrian Empire, officially known as the Empire of Austria, was a Multinational state, multinational European Great Powers, great power from 1804 to 1867, created by proclamation out of the Habsburg monarchy, realms of the Habsburgs. Duri ...

in 1864, the Schleswig island of

Ærø Ærø () is one of the Denmark, Danish Baltic Sea islands, and part of the Region of Southern Denmark, Southern Denmark Region. Since 1 January 2006 all of Ærø has constituted a single Municipalities of Denmark, municipality, known as Ærø M ...

was transferred from Augustenborg County to Svendborg County and the island remained Danish. The rest of Augustenborg County was merged with Sønderborg and became Kreis Sonderburg. Sønderborg County and Aabenraa County merged in 1932, forming Aabenraa-Sønderborg County. Sønderborg County was reestablished in 1920 following the reunification of Denmark and South Jutland following the Schleswig Plebiscites. It was dissolved in 1970 when it merged with three other counties to form

South Jutland County South Jutland County (Danish language, Danish: ''Sønderjyllands Amt'') is a former counties of Denmark, county (Danish language, Danish: ''Amt (subnational entity), amt'') on the south-central portion of the Jutland Peninsula in southern Denmark ...

. Sønderborg County corresponded geographically to the former Prussian .

1970 administrative reform

Aabenraa-Sønderborg County was dissolved in the 1970 administrative reform and the former county became six new municipalities belonging to South Jutland County: * Augustenborg * Broager *

Nordborg Nordborg (), is a town with a population of 5,680 (1 January 2025),Sundeved Sundeved ( German: ''Sundewitt'') is a peninsula on the east coast of the Jutland peninsula in south Denmark. It lies between Åbenrå Fjord and Als Fjord to the north, Alssund to the east and Flensborg Fjord to the south. The westernmost par ...

Sydals Until 1 January 2007 Sydals () was a municipality (Danish language, Danish, ''Municipalities of Denmark, kommune'') in South Jutland County on the southern part of the island of Als Island, Als off the east coast of the Jutland peninsula in south De ...

Sønderborg (; ) is a Denmark, Danish town in the Region of Southern Denmark. It is the main town and the administrative seat of Sønderborg Municipality (Kommune). The town has a population of 28,333 (1 January 2025),market town A market town is a settlement most common in Europe that obtained by custom or royal charter, in the Middle Ages, a market right, which allowed it to host a regular market; this distinguished it from a village or city. In Britain, small rura ...

s (''købstæder'') of ... nsert list->

List of former hundreds ()

The country is consisted of the following

hundred 100 or one hundred (Roman numerals, Roman numeral: C) is the natural number following 99 (number), 99 and preceding 101 (number), 101. In mathematics 100 is the square of 10 (number), 10 (in scientific notation it is written as 102). The standar ...

s: *Als Nørre Herred *Als Sønder Herred *Nybøl Herred

References

''This article incorporates material from the corresponding article on the Danish Wikipedia, accessed 30 April 2007.'' {{DEFAULTSORT:Sonderborg County Counties of Denmark dissolved in 1970

History

1970 administrative reform

List of former hundreds ()

See also

References