Stettfurt is a municipality in the district of Frauenfeld in the canton of Thurgau in Switzerland.

The low court of Sonnenberg included Kalthäusern, Ruggenbühl and Stettfurt between the 13th century until 1798.

Until the 19th century, agriculture in the village operated on the Three-field system, along with fruit orchards and (until 1908) vineyards.

The merger of the yeast factories of Hindelbank and Stettfurt in 1993 created Hefe Schweiz AG, which in 2010 had 32 employees and about 17 million francs in sales.

[3] Stettfurt has an area, as of 2009[update], of 6.36 square kilometers (2.46 sq mi).

Of the rest of the land, 0.49 km2 (0.19 sq mi) or 7.7% is settled (buildings or roads), 0.02 km2 (4.9 acres) or 0.3% is either rivers or lakes.

[4] The municipality is located in the Frauenfeld district, on the southern foot of Immenberg mountain.

Most of the population (as of 2000[update]) speaks German (97.2%), with Portuguese being second most common ( 0.9%) and Italian being third ( 0.4%).

[6] The age distribution, as of 2009[update], in Stettfurt is; 153 children or 13.9% of the population are between 0 and 9 years old and 149 teenagers or 13.6% are between 10 and 19.

[11] In the 2007 federal election the most popular party was the SVP which received 43.62% of the vote.

In the federal election, a total of 451 votes were cast, and the voter turnout was 57.4%.

[12] The historical population is given in the following table:[3][13] Sonnenberg Castle is listed as a Swiss heritage site of national significance.

The entire village of Stettfurt is listed as part of the Inventory of Swiss Heritage Sites.

[7] From the 2000 census[update], 301 or 31.0% were Roman Catholic, while 521 or 53.7% belonged to the Swiss Reformed Church.

At the lower primary level, there were 25 children or 51.0% of the total population who are female and 1 or 2.0% are not Swiss citizens.