Buch am Irchel is a municipality in the district of Andelfingen in the canton of Zürich in Switzerland.

Of the rest of the land, 6% is settled (buildings or roads) and the remainder (0.1%) is non-productive (rivers, glaciers or mountains).

[4] The municipality includes the sections of Ober- and Unterbuch, which are located on the north-east slope of the Irchel elevation.

It also includes the sections of Wiler, Bebikon, Desibach and Oberhueb.

Most of the population (as of 2000[update]) speaks German (98.4%), with English and Spanish being the second most common ( 0.3%).