Sternenberg is a former municipality in the district of Pfäffikon in the canton of Zürich in Switzerland.

[1] Before the merger, Sternenberg had a total area of 8.7 km2 (3.4 sq mi).

Of the rest of the land, 3.8% is settled (buildings or roads) and the remainder (0.2%) is non-productive (rivers, glaciers or mountains).

As of 2007[update] 0.9% of the total municipal area was undergoing some type of construction.

Most of the population (as of 2000[update]) speaks German (98.0%), with French being second most common ( 0.3%) and English being third ( 0.3%).