Population Thun has a population () of . , 12.3% of the population are resident foreign nationals. Between the last 2 years (2010–2012) the population changed at a rate of 0.3%. Migration accounted for 0.4%, while births and deaths accounted for -0.4%. Most of the population () speaks
German (36,551 or 90.5%) as their first language,
Italian is the second most common (728 or 1.8%) and
Albanian is the third (511 or 1.3%). There are 399 people who speak
French and 31 people who speak
Romansh. Of the population in the municipality, 12,265 or about 30.4% were born in Thun and lived there in 2000. There were 15,105 or 37.4% who were born in the same canton, while 5,846 or 14.5% were born somewhere else in Switzerland, and 5,699 or 14.1% were born outside of Switzerland. , there were 7,537 households that consist of only one person and 919 households with five or more people. , a total of 18,153 apartments (92.4% of the total) were permanently occupied, while 1,080 apartments (5.5%) were seasonally occupied and 406 apartments (2.1%) were empty. , the construction rate of new housing units was 5.5 new units per 1000 residents. The vacancy rate for the municipality, , was 0.1%. In 2012, single family homes made up 46.7% of the total housing in the municipality.
Historic population The historical population is given in the following chart: Colors= id:lightgrey value:gray(0.9) id:darkgrey value:gray(0.8) ImageSize = width:800 height:500 PlotArea = top:10 left: 100 bottom:90 right:100 Legend = columns:3 left:220 top:70 columnwidth:160 AlignBars = justify DateFormat = x.y Period = from:0 till:41000 TimeAxis = orientation:vertical AlignBars = justify ScaleMajor = gridcolor:darkgrey increment:8000 start:0 ScaleMinor = gridcolor:lightgrey increment:1600 start:0 Colors= id:TO value:yellowgreen legend:Total id:GE value:teal legend:German_Speaking id:IT value:green legend:Italian_Speaking id:PR value:lightpurple legend:Protestant id:CA value:oceanblue legend:Catholic id:SW value:red legend:Swiss PlotData= color:yellowgreen width:40 mark:(line,white) align:center bar:1850 from:start till:6019 text:"6,019" color:TO bar:1870 from:start till:7290 text:"7,290" color:TO bar:1888 from:start till:8286 text:"8,286" color:TO bar:1900 from:start till:10213 text:"10,213" color:TO bar:1910 from:start till:12173 text:"12,173" color:TO bar:1930 from:start till:16524 text:"16,524" color:TO bar:1950 from:start till:24157 text:"24,157" color:TO bar:1970 from:start till:36523 text:"36,523" color:TO bar:1990 from:start till:38211 text:"38,211" color:TO bar:2000 from:start till:40377 text:"40,377" color:TO LineData = points:(244,170)(307,187) color:GE points:(307,187)(369,205) color:GE points:(369,205)(431,246) color:GE points:(431,246)(493,315) color:GE points:(493,315)(556,417) color:GE points:(556,417)(618,431) color:GE points:(618,431)(680,447) color:GE points:(244,90)(307,91) color:IT points:(307,91)(369,91) color:IT points:(369,91)(431,91) color:IT points:(431,91)(493,93) color:IT points:(493,93)(556,106) color:IT points:(556,106)(618,99) color:IT points:(618,99)(680,97) color:IT points:(120,148)(182,159) color:PR points:(182,159)(244,168) color:PR points:(244,168)(307,185) color:PR points:(307,185)(369,203) color:PR points:(369,203)(431,240) color:PR points:(431,240)(493,302) color:PR points:(493,302)(556,391) color:PR points:(556,391)(618,377) color:PR points:(618,377)(680,364) color:PR points:(120,91)(182,92) color:CA points:(182,92)(244,92) color:CA points:(244,92)(307,94) color:CA points:(307,94)(369,95) color:CA points:(369,95)(431,99) color:CA points:(431,99)(493,111) color:CA points:(493,111)(556,142) color:CA points:(556,142)(618,142) color:CA points:(618,142)(680,147) color:CA points:(120,147)(182,159) color:SW points:(182,159)(244,168) color:SW points:(244,168)(307,187) color:SW points:(307,187)(369,204) color:SW points:(369,204)(431,247) color:SW points:(431,247)(493,321) color:SW points:(493,321)(556,418) color:SW points:(556,418)(618,431) color:SW points:(618,431)(680,435) color:SW
Religion From the , 26,334 or 65.2% belonged to the
Swiss Reformed Church, while 5,852 or 14.5% were
Roman Catholic. Of the rest of the population, there were 441
members of an Orthodox church (or about 1.09% of the population), there were 37 individuals (or about 0.09% of the population) who belonged to the
Christian Catholic Church, and there were 1,823 individuals (or about 4.51% of the population) who belonged to another Christian church. There were 17 individuals (or about 0.04% of the population) who were
Jewish, and 1,365 (or about 3.38% of the population) who were
Muslim. There were 115 individuals who were
Buddhist, 347 individuals who were
Hindu and 35 individuals who belonged to another church. 2,765 (or about 6.85% of the population) belonged to no church, are
agnostic or
atheist, and 1,246 individuals (or about 3.09% of the population) did not answer the question. , there were 12,673 workers who commuted into the municipality and 9,195 workers who commuted away. The municipality is a net importer of workers, with about 1.4 workers entering the municipality for every one leaving. A total of 11,320 workers (47.2% of the 23,993 total workers in the municipality) both lived and worked in Thun. Of the working population, 27% used public transportation to get to work, and 41.2% used a private car. For comparison, the average rate for the entire canton in 2011, was 14.2% and 22.0%, while the nationwide average was 12.3% and 21.1% respectively. In 2010 there were a total of 20,367 tax payers in the municipality. Of that total, 6,140 made over 75,000 CHF per year. There were 133 people who made between 15,000 and 20,000 per year. The greatest number of workers, 6,238, made between 50,000 and 75,000 CHF per year. The average income of the over 75,000 CHF group in Thun was 113,507 CHF, while the average across all of Switzerland was 131,244 CHF. In 2011 a total of 2.4% of the population received direct financial assistance from the government. ==Public transport==