Mönchaltorf is a municipality in the district of Uster in the canton of Zürich in Switzerland.

Of the rest of the land, 15.7% is settled (buildings or roads) and the remainder (3%) is non-productive (rivers, glaciers or mountains).

As of 2007[update] 12.8% of the total municipal area was undergoing some type of construction.

As of 2008[update] the gender distribution of the population was 48.8% male and 51.2% female.

Most of the population (as of 2000[update]) speaks German (92.3%), with Italian being second most common ( 1.7%) and French being third ( 1.0%).

In the 2007 election the most popular party was the SVP which received 39.2% of the vote.