Romansh language Urmein, which were still Romansh-speaking in the 17th century, had lost their Romansh majority by 1860, and are not included in this definition. This historical definition of the language area has been taken up in many subsequent publications, but the Swiss Federal Statistical Office for instance defines the language area of Romansh as those municipalities, where a majority declared to habitually use Romansh in the census of 2000. The presence of Romansh within its traditional language area varies from region to region. In 2000, 66 municipalities still had a Romansh majority, an additional 32 had at least 20% who declared
Romansh language around them remained Romansh-speaking longer. The shift to German was caused in particular by the influence of the local German-speaking élites and by German-speaking immigrants from the north, with the lower and rural classes retaining Romansh longer. In addition, beginning around 1270, the German-speaking Walser began settling in sparsely populated or uninhabited areas within the Romansh-speaking heartland. The Walser sometimes expanded into Romansh-speaking areas from their original settlements, which then often became German-speaking, such as Davos, Schanfigg, the Prättigau, Schams, and Valendas, which became German-speaking by the 14th century. In rare cases, these Walser settlements were eventually assimilated by their