Walenstadt is a municipality in the Wahlkreis (constituency) of Sarganserland in the canton of St. Gallen in Switzerland.

Of the rest of the land, 5.3% is settled (buildings or roads) and the remainder (19.2%) is non-productive (rivers or lakes).

In Walenstadtberg is a famous building: The Paxmal, built by Karl Bickel.

The blazon of the municipal coat of arms is Azure a fortified civic gates Argent.

Of the foreign population, (as of 2000[update]), 73 are from Germany, 148 are from Italy, 400 are from ex-Yugoslavia, 24 are from Austria, 95 are from Turkey, and 107 are from another country.

Most of the population (as of 2000[update]) speaks German (88.5%), with Albanian being second most common ( 2.9%) and Italian being third ( 2.4%).

[8] The age distribution, as of 2000[update], in Walenstadt is; 579 children or 12.8% of the population are between 0 and 9 years old and 637 teenagers or 14.1% are between 10 and 19.

[3] Out of the total population in Walenstadt, as of 2000[update], the highest education level completed by 997 people (22.0% of the population) was primary, while 1,681 (37.1%) have completed their secondary education, 476 (10.5%) have attended tertiary school, and 203 (4.5%) are not in school.

[11] From the 2000 census[update], 3,057 or 67.5% are Roman Catholic, while 672 or 14.8% belonged to the Swiss Reformed Church.