Both Hallau and Oberhallau are first mentioned in 1095 as Hallaugia superiori et inferiori. Until the Peasants' War of 1653 it was part of Hallau.
Coat of arms
The blazon of the municipal coat of arms is Azure a Fleur-de-lis Argent and overall a Key Or in fess.
Geography
Oberhallau has an area,, of. Of this area, 72.5% is used for agricultural purposes, while 20.5% is forested. Of the rest of the land, 6.8% is settled and the remainder is non-productive. The municipality is located in the Unterklettgau district on the foot of the Hallauerberg.
Demographics
Oberhallau has a population of 425, of which 2.4% are foreign nationals. Of the foreign population,, 30% are from Germany, 10% are from Italy, and 60% are from another country. Over the last 10 years the population has decreased at a rate of 0%. Most of the population speaks German, with Serbo-Croatian being second most common and English being third. The age distribution of the population is children and teenagers make up 22.4% of the population, while adults make up 61.6% and seniors make up 16%. In the 2007 federal election the most popular party was the SVP which received 61.5% of the vote. The next two most popular parties were the SP, and the FDP . In Oberhallau about 84.3% of the population have completed either non-mandatory upper secondary education or additional higher education. In Oberhallau,, 3.56% of the population attend kindergarten or another pre-school, 4.28% attend a Primary School, 4.75% attend a lower level Secondary School, and 3.8% attend a higher level Secondary School. , 13.6% of the population belonged to the Roman Catholic Church and 77.1% belonged to the Swiss Reformed Church. The historical population is given in the following table:
year
population
1771
399
1798
531
1836
762
1850
734
1900
534
1950
426
2000
397
Economy
Oberhallau has an unemployment rate,, of 0.64%. , there were 88 people employed in the primary economic sector and about 31 businesses involved in this sector. 18 people are employed in the secondary sector and there are 3 businesses in this sector. 25 people are employed in the tertiary sector, with 7 businesses in this sector. the mid year average unemployment rate was 0.4%. There were 14 non-agrarian businesses in the municipality and 47.8% of the population was involved in the secondary sector of the economy while 52.2% were involved in the third. At the same time, 54.3% of the working population was employed full-time, and 45.7% was employed part-time. There were 46 residents of the municipality who were employed in some capacity, of which females made up 58.7% of the workforce. there were 83 residents who worked in the municipality, while 128 residents worked outside Oberhallau and 18 people commuted into the municipality for work. , there is 1 restaurant in the village and the hospitality industry in Oberhallau employs 2 people.
