All the water in the municipality is flowing water. The municipality is located on the eastern edge of the Grosses Moos marsh between the Aare river and the Hagneck Canal. It consists of the linear village of Kallnach. The municipalities of Kallnach and Niederried bei Kallnach are considering a merger on 1 January 2013 where Kallnach will absorb Niederried. Coat of arms The blazon of the municipal coat of arms is Azure a clapper Argent between two mullets Or. Demographics Kallnach has a population () of . , 8.4% of the population are resident foreign nationals. Over the last 10 years (2000–2010) the population has changed at a rate of 2.1%. Migration accounted for 3.8%, while births and deaths accounted for −2%. Most of the population () speaks German (1,416 or 96.0%) as their first language, Albanian is the second most common (15 or 1.0%) and French is the third (12 or 0.8%). There are 7 people who speak Italian and 1 person who speaks Romansh. , the population was 50.1% male and 49.9% female. The population was made up of 698 Swiss men (45.3% of the population) and 74 (4.8%) non-Swiss men. There were 714 Swiss women (46.3%) and 5 (0.3%) non-Swiss women. Of the population in the municipality, 601 or about 40.7% were born in Kallnach and lived there in 2000. There were 551 or 37.4% who were born in the same canton, while 172 or 11.7% were born somewhere else in Switzerland, and 114 or 7.7% were born outside of Switzerland. , children and teenagers (0–19 years old) make up 25.9% of the population, while adults (20–64 years old) make up 58.6% and seniors (over 64 years old) make up 15.5%. , there were 615 people who were single and never married in the municipality. There were 750 married individuals, 71 widows or widowers and 39 individuals who are divorced. , there were 581 private households in the municipality, and an average of 2.5 persons per household. There were 163 households that consist of only one person and 49 households with five or more people. , a total of 556 apartments (92.5% of the total) were permanently occupied, while 25 apartments (4.2%) were seasonally occupied and 20 apartments (3.3%) were empty. , the construction rate of new housing units was 6.5 new units per 1000 residents. The vacancy rate for the municipality, , was 1.05%. The historical