Demographics
Greng has a population (as of December 2011) of 166. As of 2008, 13.1% of the population are resident foreign nationals. Over the last 10 years (2000–2010) the population has changed at a rate of 1.9%. Migration accounted for 5.8%, while births and deaths accounted for 7.7%.
Most of the population (as of 2000) speaks German (138 or 92.0%) as their first language, French is the second most common (8 or 5.3%) and Italian is the third (1 or 0.7%).
As of 2008, the population was 53.4% male and 46.6% female. The population was made up of 68 Swiss men (45.9% of the population) and 11 (7.4%) non-Swiss men. There were 62 Swiss women (41.9%) and 7 (4.7%) non-Swiss women. Of the population in the municipality, 23 or about 15.3% were born in Greng and lived there in 2000. There were 21 or 14.0% who were born in the same canton, while 90 or 60.0% were born somewhere else in Switzerland, and 13 or 8.7% were born outside of Switzerland.
As of 2000, children and teenagers (0–19 years old) make up 24.7% of the population, while adults (20–64 years old) make up 66.7% and seniors (over 64 years old) make up 8.7%.
As of 2000, there were 59 people who were single and never married in the municipality. There were 72 married individuals, 5 widows or widowers and 14 individuals who are divorced.
As of 2000, there were 65 private households in the municipality, and an average of 2.3 persons per household. There were 20 households that consist of only one person and 6 households with five or more people. In 2000, a total of 54 apartments (78.3% of the total) were permanently occupied, while 14 apartments (20.3%) were seasonally occupied and one apartment was empty.
The historical population is given in the following chart:
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