Sarganserland Wahlkreis has a population of . Of the foreign population,, 373 are from Germany, 854 are from Italy, 3,171 are from ex-Yugoslavia, 220 are from Austria, 350 are from Turkey, and 1,090 are from another country. Of the Swiss national languages, 31,401 speak German, 112 people speak French, 651 people speak Italian, and 157 people speak Romansh. The age distribution,, in the Sarganserland is; 4,500 children or 12.7% of the population are between 0 and 9 years old and 4,985 teenagers or 14.1% are between 10 and 19. Of the adult population, 4,329 people or 12.2% of the population are between 20 and 29 years old. 5,722 people or 16.2% are between 30 and 39, 5,002 people or 14.2% are between 40 and 49, and 4,281 people or 12.1% are between 50 and 59. The senior population distribution is 3,011 people or 8.5% of the population are between 60 and 69 years old, 2,203 people or 6.2% are between 70 and 79, there are 1,122 people or 3.2% who are between 80 and 89, and there are 184 people or 0.5% who are between 90 and 99. there were 4,066 persons who were living alone in a private dwelling. There were 7,011 persons who were part of a couple without children, and 20,538 who were part of a couple with children. There were 1,799 people who lived in single parent home, while there are 273 persons who were adult children living with one or both parents, 177 persons who lived in a household made up of relatives, 187 who lived household made up of unrelated persons, and 1,288 who are either institutionalized or live in another type of collective housing. The entire Swiss population is generally well educated. Out of the total population in the Sarganserland,, the highesteducation levelcompleted by 8,304 people was Primary, while 12,775 have completed Secondary, 3,059 have attended a Tertiary school, and 1,656 are not in school. The remainder did not answer this question.
From the, 24,579 or 69.6% are Roman Catholic, while 4,679 or 13.2% belonged to the Swiss Reformed Church. Of the rest of the population, there are 34 individuals who belong to the Christian Catholic faith, there are 909 individuals who belong to the Orthodox Church, and there are 280 individuals who belong to another Christian church. There are 8 individuals who are Jewish, and 2,160 who are Islamic. There are 231 individuals who belong to another church, 1,393 belong to no church, are agnostic or atheist, and 1,066 individuals did not answer the question.
