Lohn is first mentioned in mid-12th Century as Laune and Lune. In 1219 it was mentioned as de Laone.
Geography
Lohn has an area,, of. Of this area, 56.5% is used for agricultural purposes, while 35% is forested. Of the rest of the land, 1.5% is settled and the remainder is non-productive. Before 2017, the municipality was located in the Schams sub-district, of the Hinterrhein district, after 2017 it was part of the Viamala Region. It is a haufendorf located at an elevation of on the upper Schamserberg.
Demographics
Lohn has a population of. Over the last 10 years the population has decreased at a rate of -10.7%. , the gender distribution of the population was 44.0% male and 56.0% female. The age distribution,, in Lohn is; 5 people or 10.0% of the population are between 0 and 9 years old. 9 people or 18.0% are 10 to 14, and people or 0.0% are 15 to 19. Of the adult population, 1 person or 2.0% of the population is between 20 and 29 years old. 5 people or 10.0% are 30 to 39, 9 people or 18.0% are 40 to 49, and 1 person or 2.0% is 50 to 59. The senior population distribution is 10 people or 20.0% of the population are between 60 and 69 years old, 10 people or 20.0% are 70 to 79. In the 2007 federal election the most popular party was the SVP which received 45.1% 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 Lohn about 82.4% of the population have completed either non-mandatory upper secondary education or additional higher education. Lohn has an unemployment rate of 0%., there were 23 people employed in the primary economic sector and about 7 businesses involved in this sector. The historical population is given in the following graph: Colors= id:lightgrey value:gray id:darkgrey value:gray ImageSize = width: auto height:200 barincrement:45 PlotArea = top:20 left:35 bottom:20 right:35 AlignBars = justify DateFormat = x.y Period = from:0 till:150 TimeAxis = orientation:vertical AlignBars = justify ScaleMajor = gridcolor:darkgrey increment:50 start:0 ScaleMinor = gridcolor:lightgrey increment:25 start:0 PlotData= color:yellowgreen width: 35 mark: align:center bar:1780 from:start till:126 text:"126" bar:1850 from:start till:97 text:"97" bar:1900 from:start till:75 text:"75" bar:1950 from:start till:62 text:"62" bar:1980 from:start till:36 text:"36" bar:1990 from:start till:58 text:"58" bar:2000 from:start till:50 text:"50" bar:2018 from:start till:46 text:"46"
Languages
Most of the population speaks Rhaeto-Romance and the rest speak German.