The Wahlkreis (SFOS number 1726) has been established on June 10, 2001, with an area of 246.16 km2 (95.04 sq mi).

In the medieval period, the area was owned by the counts of Lenzburg, from 1172 by Kyburg, from 1269 by Habsburg, from 1406 by Toggenburg and from 1436 again briefly by Habsburg, until 1438 when duke Frederick gave it to Schwyz and Glarus as a condominium.

Of the foreign population, (as of 2000[update]), 919 are from Germany, 2,073 are from Italy, 3,867 are from ex-Yugoslavia, 278 are from Austria, 817 are from Turkey, and 2,206 are from another country.

[4] The age distribution, as of 2000[update], in Region See-Gaster is; 7,257 children or 12.5% of the population are between 0 and 9 years old and 7,776 teenagers or 13.4% are between 10 and 19.

[4] Out of the total population in the region, as of 2000[update], the highest education level completed by 12,282 people (21.2% of the population) was Primary, while 21,312 (36.8%) have completed Secondary, 6,561 (11.3%) have attended a Tertiary school, and 2,529 (4.4%) are not in school.

[5] From the 2000 census[update], 35,391 or 61.1% are Roman Catholic, while 11,831 or 20.4% belonged to the Swiss Reformed Church.