|Population||801 (Dec 2012)|
|- Density||73 /km2 (190 /sq mi)|
|Area||10.89 km2 (4.20 sq mi)|
|Elevation||807 m (2,648 ft)|
|Surrounded by||Muotathal, Oberiberg, Schwyz|
Illgau is first mentioned in 1370 as Ilgoe.
Illgau has an area, as of 2006[update], of 10.9 km2 (4.2 sq mi). Of this area, 62% is used for agricultural purposes, while 31.1% is forested. Of the rest of the land, 2.9% is settled (buildings or roads) and the remainder (4%) is non-productive (rivers, glaciers or mountains).
It consists of the village sections of Illgau, Vorder Oberberg and Hinter Oberberg as well as scattered farm houses. All of the farm houses, up to about the 1,300 m (4,300 ft) level are occupied throughout the year.
Illgau has a population (as of 31 December 2012) of 801. As of 2007[update], 1.6% of the population was made up of foreign nationals. Over the last 10 years the population has grown at a rate of 7%. Most of the population (as of 2000[update]) speaks German (99.2%), with Albanian being second most common ( 0.3%) and Russian being third ( 0.3%).
As of 2000[update] the gender distribution of the population was 50.8% male and 49.2% female. The age distribution, as of 2008[update], in Illgau is; 242 people or 33.6% of the population is between 0 and 19. 241 people or 33.4% are 20 to 39, and 166 people or 23.0% are 40 to 64. The senior population distribution is 45 people or 6.2% are 65 to 74. There are 19 people or 2.6% who are 70 to 79 and 8 people or 1.11% of the population who are over 80.
The entire Swiss population is generally well educated. In Illgau about 55.2% of the population (between age 25-64) have completed either non-mandatory upper secondary education or additional higher education (either university or a Fachhochschule).
Illgau has an unemployment rate of 0.96%. As of 2005[update], there were 70 people employed in the primary economic sector and about 28 businesses involved in this sector. 63 people are employed in the secondary sector and there are 8 businesses in this sector. 71 people are employed in the tertiary sector, with 14 businesses in this sector.
From the 2000 census[update], 698 or 96.8% are Roman Catholic, while less than 5 people belonged to the Swiss Reformed Church. There are 6 (or about 0.83% of the population) who are Islamic. 9 (or about 1.25% of the population) belong to no church, are agnostic or atheist, and 6 individuals (or about 0.83% of the population) did not answer the question.
The historical population is given in the following table:
- Swiss Federal Statistics Office – STAT-TAB Ständige und Nichtständige Wohnbevölkerung nach Region, Geschlecht, Nationalität und Alter (German) accessed 29 August 2013
- Arealstatistik Standard - Gemeindedaten nach 4 Hauptbereichen
- Illgau in German, French and Italian in the online Historical Dictionary of Switzerland.
- Swiss Federal Statistical Office accessed 28-Aug-2009
- Canton Schwyz Statistics (German) accessed 27 August 2009
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