Krinau is a former municipality in the Wahlkreis (constituency) of Toggenburg in the canton of St. Gallen in Switzerland. On 1 January 2013 Krinau merged into the municipality of Wattwil.
History
Krinau is first mentioned in 1357 as Krinnow.
Demographics
Krinau had a population (as of 2011) of 260. , about 5.9% of the population was made up of foreign nationals. Of the foreign population, (), 2 are from Germany, 2 are from Austria, and 2 are from another country. Over the last 10 years the population has grown at a rate of 0.4%. Most of the population () speaks German (98.6%), with Italian being second most common ( 0.4%) and Romansh being third ( 0.4%). Of the Swiss national languages (), 274 speak German, 1 person speaks, Italian, and 1 person speaks Romansh.
there were 28 persons (or 10.1% of the population) who were living alone in a private dwelling. There were 64 (or 23.0%) persons who were part of a couple (married or otherwise committed) without children, and 152 (or 54.7%) who were part of a couple with children. There were 22 (or 7.9%) people who lived in single parent home, 6 who lived household made up of unrelated persons, and 6 who are either institutionalized or live in another type of collective housing.
{| class="wikitable"
|-
! year
! population
|-
| 1789
| 180
|-
| 1850
| 452
|-
| 1900
| 381
|-
| 1950
| 320
|-
| 2000
| 278
|-
|}
Economy
, Krinau had an unemployment rate of 1.19%. , there were 53 people employed in the primary economic sector and about 23 businesses involved in this sector. 12 people are employed in the secondary sector and there are 3 businesses in this sector. 22 people are employed in the tertiary sector, with 7 businesses in this sector. There were 29 businesses in the municipality of which 3 were involved in the secondary sector of the economy while 4 were involved in the third.
there were 69 residents who worked in the municipality, while 69 residents worked outside Krinau and 15 people commuted into the municipality for work.
Religion
From the , 88 or 31.7% are Roman Catholic, while 174 or 62.6% belonged to the Swiss Reformed Church. Of the rest of the population there is 1 individual who belongs to another Christian church and there are 15 (or about 5.40% of the population) who belong to no church, are agnostic or atheist.