In 1793, French Revolutionary troops occupied the land, and in 1801, France annexed the German lands on the Rhine’s left bank. Blaubach now belonged to the "Mairie" (“Mayoralty”) of Kusel and the Canton of Kusel in the Arrondissement of Birkenfeld in the Department of Sarre. In 1816, the Kingdom of Bavaria acquired, under the terms laid out by the Congress of Vienna, the lands on the Rhine's left bank, which were now known as "Rheinbaiern" (“Rhenish Bavaria”), but later as "Bayerische Rheinpfalz" (“Bavarian Rhenish Palatinate”). Within the Kingdom of Bavaria, Blaubach belonged to the "Bürgermeisterei" (“Mayoralty”) of Kusel, the Canton of Kusel and the "Landkommissariat" (later "Bezirksamt" and "Landkreis" – district) of Kusel in the "Rheinkreis" – yet another name for Bavaria's exclave in the Palatinate. In 1871, the municipality received an endowment from a villager who had emigrated to the United States amounting to more than $1,000, the interest from which was to be paid out to the poor each year. The donation spread some cheer, but because of the formula whereby the money was to be distributed, it was both a boon and a bane, causing considerable disquiet. In the 1933 Reichstag elections, the people of Blaubach voted 70.1% for Adolf Hitler and his Nazi Party (NSDAP). In the course of the 1968 administrative restructuring in Rhineland-Palatinate, Blaubach became in 1972 a self-administering "Ortsgemeinde" within the "Verbandsgemeinde" of Kusel. In the time that followed, the village ushered in a considerable upswing through the opening of extensive new building areas. Workers, officials and businesspeople who had jobs in Kusel settled in Blaubach, thus bringing a change in the population structure. As well, the prospects for tourism improved. Blaubach is today said to be a tourist community and (almost) a suburb of the town of Kusel with a good outlook for the future.