At the beginning of the 19th century, Dörth, like all the lands on the Rhine’s left bank, lay under French rule.

After French rule ended some 20 years later, Dörth passed along with the Rhineland to the Kingdom of Prussia under the terms of the Congress of Vienna, becoming part of the Rhine Province.

In 1816, within the newly formed Sankt Goar district, Dörth at first remained in the Amtsbürgermeisterei of Pfalzfeld, as it had been in French times.

As a result of the villagers’ wishes, however, it was grouped together in 1817 with Karbach into the Amt of Halsenbach, thus reinstating the structure from Electoral-Trier times.

In the late 1940s, with currency reform and the establishment of the Federal Republic of Germany, there was once more solid ground to stand on.

[5] The municipality's arms might in English heraldic language be described thus: Tierced in mantle reversed, argent a cross abased gules, azure issuant from base a cross Latin, the dexter and sinister arms couped short of the lines of partition, Or surmounted by a sword palewise, the point to base, of the field, and gules a fess abased of the first.

The red cross on the dexter (armsbearer's right, viewer's left) side is the armorial device formerly borne by the Electorate of Trier, thus denoting the village's allegiance in the Middle Ages.

The charges in the middle, the gold cross and the blue sword, stand for Philip the Apostle and James the Elder, who are the municipality's patron saints.