In 1802–03, Deißlingen, a possession of theFree Imperial City ofRottweil, and Lauffen ob Rottweil, a property ofRottenmünster Abbey, weremediatized to theElectorate, laterKingdom, of Württemberg. Deißlingen was assigned to a newly organizedOberamtat Rottweil [de], and Lauffen toOberamt Spaichingen [de]. Lauffen joined Deißlingen in Rottweil's jurisdiction on 27 October 1810. The district was reorganized on 1 October 1938 asLandkreis Rottweil, to which the two towns were still assigned. On 1 January 1974, Lauffen was incorporated into Deißlingen and a new municipality formed.[2]
The municipality (Gemeinde) of Deißlingen covers 32.15 square kilometers (12.41 sq mi) of theRottweil district ofBaden-Württemberg, which assigns Deißlingen to the metropolitan area ofVillingen-Schwenningen,Tuttlingen, andRottweil. Deißlingen is physically located in a transitional landscape between themuschelkalk-keuper plateaus of theUpper Gäu [de] to the north, theSwabian Jura to the east, and theBaar to the south. Elevation above sea level in the municipal area ranges from a high of 753 meters (2,470 ft)Normalnull (NN) at the border withTuttlingen district to a low of 574 meters (1,883 ft) NN on theNeckar as it forms the border with Rottweil.[2]
The municipalcoat of arms for Deißlingen shows abluewolfsangel upon afield ofyellow, with ablack barat the top containing a yellow stag antler, a clear reference to Württemberg. The wall anchor is a motif associated with Lauffen ob Rottweil's as early as 1780. This coat of arms is a combination of those of the towns of Deißlingen and Lauffen, with a change made to the chief to comply with therule of tincture. The Rottweil district office approved the official use of the coat of arms and issued a corresponding municipal flag on 10 December 1981.[2]