, the gender distribution of the population was 51.8% male and 48.2% female. The population was made up of 1,265 Swiss citizens (73.1% of the population), and 466 non-Swiss residents (26.9%) Of the population in the municipality 456 or about 28.6% were born in Grellingen and lived there in 2000. There were 236 or 14.8% who were born in the same canton, while 436 or 27.3% were born somewhere else in Switzerland, and 417 or 26.1% were born outside of Switzerland.