Zetzwil is a municipality in the district of Kulm in the canton of Aargau in Switzerland.

Zetzwil has an area, as of 2009[update], of 5.8 square kilometers (2.2 sq mi).

35.3% of the total land area is heavily forested and 2.2% is covered with orchards or small clusters of trees.

[3] The blazon of the municipal coat of arms is Azure a Ploughshare Argent between two Mullets of Five of the same in Chief and Coupeaux Vert.

[7] The age distribution, as of 2008[update], in Zetzwil is; 107 children or 8.5% of the population are between 0 and 9 years old and 160 teenagers or 12.7% are between 10 and 19.

[7] In the 2007 federal election the most popular party was the SVP which received 47.9% of the vote.

[7] From the 2000 census[update], 198 or 15.9% were Roman Catholic, while 875 or 70.3% belonged to the Swiss Reformed Church.