Wuppenau is a municipality in the district of Weinfelden in the canton of Thurgau in Switzerland.

Wuppenau has an area, as of 2009[update], of 12.15 square kilometers (4.69 sq mi).

Of the rest of the land, 0.8 km2 (0.31 sq mi) or 6.6% is settled (buildings or roads).

while parks, green belts and sports fields made up 2.6%.

Most of the population (as of 2000[update]) speaks German (97.0%), with Serbo-Croatian being second most common ( 0.9%) and Romansh being third ( 0.5%).

[7] As of 2008[update], the gender distribution of the population was 50.3% male and 49.7% female.

[6] The age distribution, as of 2009[update], in Wuppenau is; 117 children or 11.5% of the population are between 0 and 9 years old and 157 teenagers or 15.4% are between 10 and 19.

[12] In the 2007 federal election the most popular party was the SVP which received 47.71% of the vote.

In the federal election, a total of 383 votes were cast, and the voter turnout was 51.3%.

[13] The historical population is given in the following table:[14] The entire hamlet of Heiligkreuz is designated as part of the Inventory of Swiss Heritage Sites.

[7] From the 2000 census[update], 583 or 58.2% were Roman Catholic, while 302 or 30.2% belonged to the Swiss Reformed Church.