Ottenbach has a population (as of ) of . , 7.3% of the population was made up of foreign nationals. Over the last 10 years the population has grown at a rate of 5.5%. Most of the population () speaks German (93.6%), with Italian being second most common ( 1.7%) and English being third ( 1.0%). In the 2007 election the most popular party was the
SVP which received 34.1% of the vote. The next three most popular parties were the
SPS (20%), the
FDP (15.5%) and the
Green Party (11.2%). The age distribution of the population () is children and teenagers (0–19 years old) make up 26.1% of the population, while adults (20–64 years old) make up 64.4% and seniors (over 64 years old) make up 9.6%. In Ottenbach about 84.9% of the population (between age 25-64) have completed either non-mandatory
upper secondary education or additional higher education (either university or a
Fachhochschule). Ottenbach has an unemployment rate of 2.04%. , there were 47 people employed in the
primary economic sector and about 21 businesses involved in this sector. 144 people are employed in the
secondary sector and there are 19 businesses in this sector. 388 people are employed in the
tertiary sector, with 82 businesses in this sector. The historical population is given in the following table: ==References==