Freienstein-Teufen is a municipality in the district of Bülach in the canton of Zürich in Switzerland.

Of the rest of the land, 9.2% is settled (buildings or roads) and the remainder (1.8%) is non-productive (rivers, glaciers or mountains).

[4] Situated in the lower Tösstal, bordering on the Rhine, it comprises the villages of Freienstein and Teufen.

Most of the population (as of 2000[update]) speaks German (90.9%), with Italian being second most common ( 2.2%) and Albanian being third ( 1.6%).

[4] The historical population is given in the following table:[3] Media related to Freienstein-Teufen at Wikimedia Commons