Ohmstal is first mentioned around 1150 as Omistal. In the 15th to 17th Centuries it was known as Amanstal.
Geography
Before the merger, Ohmstal had a total area of. Of this area, 67.9% is used for agricultural purposes, while 26.6% is forested. Of the rest of the land, 4.9% is settled and the remainder is non-productive rivers. , 26.56% of the total land area was forested. Of the agricultural land, 65.63% is used for farming or pastures, while 2.23% is used for orchards or vine crops. Of the settled areas, 2.23% is covered with buildings, 0.22% is industrial, 0.22% is classed as special developments, 0.22% is parks or greenbelts and 2.01% is transportation infrastructure.
The former municipality is located on the left sided of the Luthern river valley.
Demographics
Ohmstal had a population of 312. , 19 or about 6.0% are not Swiss citizens. Over the last 10 years the population has decreased at a rate of -0.6%. Most of the population speaks German , with Portuguese being second most common and French being third. In the 2007 election the most popular party was the CVP which received 45.1% of the vote. The next three most popular parties were the SVP, the FDP and the Green Party. The age distribution,, in Ohmstal is; 77 people or 24.2% of the population is 0–19 years old. 81 people or 25.5% are 20–39 years old, and 115 people or 36.2% are 40–64 years old. The senior population distribution is 31 people or 9.7% are 65–79 years old, 11 or 3.5% are 80–89 years old and 3 people or 0.9% of the population are 90+ years old. In Ohmstal about 73% of the population have completed either non-mandatory upper secondary education or additional higher education. there are 102 households, of which 16 households contain only a single individual. 22 or about 21.6% are large households, with at least five members. there were 68 inhabited buildings in the municipality, of which 42 were built only as housing, and 26 were mixed use buildings. There were 29 single family homes, 9 double family homes, and 4 multi-family homes in the municipality. Most homes were either two or three story structures. There were only 3 single story buildings and 3 four or more story buildings. Ohmstal has an unemployment rate of 0.68%. , there were 66 people employed in the primary economic sector and about 22 businesses involved in this sector. 26 people are employed in the secondary sector and there are 4 businesses in this sector. 22 people are employed in the tertiary sector, with 9 businesses in this sector. 52.7% of the population of the municipality were employed in some capacity. At the same time, females made up 37.7% of the workforce. the religious membership of Ohmstal was; 249 were Roman Catholic, and 46 were Protestant. Of the rest; there were 20 who do not belong to any organized religion, 2 who did not answer the question. The historical population is given in the following table: