Flerden has an area,, of. Of this area, 54.6% is used for agricultural purposes, while 30% is forested. Of the rest of the land, 3.6% is settled and the remainder is non-productive. Before 2017, the municipality was located in the Thusis sub-district, of the Hinterrhein district, after 2017 it was part of the Viamala Region. It consists of the haufendorf of Flerden on the inner Heinzenberg at an elevation of.
Demographics
Flerden has a population of. , 2.0% of the population was made up of foreign nationals. Over the last 10 years the population has grown at a rate of 15.3%. , the gender distribution of the population was 49.5% male and 50.5% female. The age distribution,, in Flerden is; 14 people or 8.8% of the population are between 0 and 9 years old. 22 people or 13.8% are 10 to 14, and 13 people or 8.1% are 15 to 19. Of the adult population, 9 people or 5.6% of the population are between 20 and 29 years old. 17 people or 10.6% are 30 to 39, 30 people or 18.8% are 40 to 49, and 21 people or 13.1% are 50 to 59. The senior population distribution is 12 people or 7.5% of the population are between 60 and 69 years old, 16 people or 10.0% are 70 to 79, there are 6 people or 3.8% who are 80 to 89. In the 2007 federal election the most popular party was the SVP which received 47.6% of the vote. The next three most popular parties were the FDP, the SPS and the CVP. The entire Swiss population is generally well educated. In Flerden about 81% of the population have completed either non-mandatory upper secondary education or additional higher education. Flerden has an unemployment rate of 0.32%. , there were 42 people employed in the primary economic sector and about 16 businesses involved in this sector. 3 people are employed in the secondary sector and there are 2 businesses in this sector. 15 people are employed in the tertiary sector, with 4 businesses in this sector. The historical population is given in the following table:
year
population
1808
148
1850
122
1900
109
1950
150
1960
132
1970
105
1980
128
1990
158
2000
160
Languages
Most of the population speaks German, with Romansh being second most common and Italian being third.