When the railroad tunnels through the Alps were completed near the end of the 19th century, they greatly reduced traffic through the region.

Since the opening of the San Bernardino road tunnel (A 13) in 1967, Andeer has once again been on a major thoroughfare.

Of the rest of the land, 3% is settled (buildings or roads) and the remainder (19.6%) is non-productive (rivers, glaciers or mountains).

[5] Before 2017, the municipality was located in the Schams sub-district, of the Hinterrhein district, after 2017 it was part of the Viamala Region.

The wettest month is August during which time Andeer receives an average of 122 mm (4.8 in) of precipitation.

The driest month of the year is February with an average of 38 mm (1.5 in) of precipitation over 11.4 days.

[10] Earlier, Andeer was largely Romansh-speaking, but now the majority of the population speaks German, and this is the only language for conducting official business.