Benken is a municipality in the Wahlkreis (constituency) of See-Gaster in the canton of St. Gallen in Switzerland.

Of the rest of the land, 9.1% is settled (buildings or roads) and the remainder (5.5%) is non-productive (rivers or lakes).

It consists of the linear village of Benken along the Linth and the hamlets of Giessen, Sand, Rötli, Dorf, Räbli, Halden, Starrberg, Unterhalden, Schmittenäcker, Schmitten as well as scattered farmhouses in the valley and on the Büchel hill.

The blazon of the municipal coat of arms is Or a Lion rampant Gules holding in dexter a Key downwards to sinister Sable.

Of the foreign population, (as of 2000[update]), 15 are from Germany, 21 are from Italy, 103 are from ex-Yugoslavia, 7 are from Austria, 4 are from Turkey, and 82 are from another country.

[8] The age distribution, as of 2000[update], in Benken is; 318 children or 14.3% of the population are between 0 and 9 years old and 391 teenagers or 17.5% are between 10 and 19.

[11] Benken railway station is a stop located on the regional line between Rapperswil and Ziegelbrücke.

Both trains run hourly, combining to provide half-hourly services to Rapperswil and Ziegelbrücke.

[12] From the 2000 census[update], 1,769 or 79.4% are Roman Catholic, while 185 or 8.3% belonged to the Swiss Reformed Church.