Oberaargau. Coat of arms The blazon of the municipal coat of arms is Azure two Keys Argent in Saltire and in chief a Mullet Or. Demographics Huttwil has a population () of . , 9.4% of the population are resident foreign nationals. Between the last 2 years (2010-2012) the population changed at a rate of -0.9%. Migration accounted for -0.6%, while births and deaths accounted for -0.7%. Most of the population () speaks German (4,514 or 93.6%) as their first language, Italian is the second most common (55 or 1.1%) and Albanian is the third (53 or 1.1%). There are 15 people who speak French and 2 people who speak Romansh. , the population was 50.3% male and 49.7% female. The population was made up of 2,088 Swiss men (44.4% of the population) and 277 (5.9%) non-Swiss men. There were 2,139 Swiss women (45.5%) and 202 (4.3%) non-Swiss women. Of the population in the municipality, 1,877 or about 38.9% were born in Huttwil and lived there in 2000. There were 1,544 or 32.0% who were born in the same canton, while 759 or 15.7% were born somewhere else in Switzerland, and 451 or 9.3% were born outside of Switzerland. , children and teenagers (0–19 years old) make up 20.7% of the population, while adults (20–64 years old) make up 59.3% and seniors (over 64 years old) make up 20.0%. , there were 1,996 people who were single and never married in the municipality. There were 2,280 married individuals, 359 widows or widowers and 190 individuals who are divorced. , there were 682 households that consist of only one person and 156 households with five or more people. , a total of 1,907 apartments (90.3% of the total) were permanently occupied, while 114 apartments (5.4%) were seasonally occupied and 91 apartments (4.3%) were empty. , the construction rate of new housing units was 1.7 new units per 1000 residents. The vacancy rate for the municipality, , was 2.3%. In 2012, single family homes made up 46.7% of the total housing in the municipality. The historical population is given in the following chart: Economy , Huttwil had an unemployment rate of 1.81%. , there were a total of 3,080 people employed in the municipality. Of these, there were 254 people employed in the primary economic sector and about 87 businesses involved in this sector. The secondary sector employs 1,192 people and there