[5] The historical population is given in the following chart:[7] The Hottwil, a former untervogtei residence with outbuildings and the catholic parish church in Mettau are listed as Swiss heritage sites of national significance.

Of these, a total of 150 people worked in 56 businesses in the primary economic sector.

In the federal election, a total of 732 votes were cast, and the voter turnout was 52.2%.

[9] In 2014 the crime rate, of the over 200 crimes listed in the Swiss Criminal Code (running from murder, robbery and assault to accepting bribes and election fraud), in Mettauertal was 13.6 per thousand residents.

The rate of violations of immigration, visa and work permit laws was 0 per thousand residents.