Rumisberg has a population (as of ) of . , 3.4% of the population was made up of foreign nationals. Over the last 10 years the population has grown at a rate of 11.3%. Most of the population () speaks German (98.5%), with Italian being second most common ( 0.4%) and Serbo-Croatian being third ( 0.4%). In the 2007 election the most popular party was the
SVP which received 52.8% of the vote. The next three most popular parties were the
SPS (14.8%), the
FDP (14.5%) and the
Green Party (10.1%). The age distribution of the population () is children and teenagers (0–19 years old) make up 24% of the population, while adults (20–64 years old) make up 61.1% and seniors (over 64 years old) make up 14.9%. In Rumisberg about 78.5% of the population (between age 25-64) have completed either non-mandatory
upper secondary education or additional higher education (either university or a
Fachhochschule). Rumisberg has an unemployment rate of 1.19%. , there were 23 people employed in the
primary economic sector and about 11 businesses involved in this sector. 8 people are employed in the
secondary sector and there are 4 businesses in this sector. 24 people are employed in the
tertiary sector, with 8 businesses in this sector. The historical population is given in the following table: ==References==