It received its own jurisdiction and exemption from taxation from Albert II, Duke of Austria in 1337.

After a fire in 1362, the town was rebuilt with ramparts and was granted a yearly and weekly market by Leopold III, Duke of Austria in 1370.

It was partly destroyed in the Old Zürich War and rebuilt without fortification but retaining its market rights and jurisdiction.

Kyburg lost all its privileges in 1798 and was incorporated as municipality in Fehraltdorf district.

From 1803 to 1815 it was assigned to Uster-Grüningen district, from 1815 to 1831 it was once again administrative seat of a separate Oberamt Kyburg.

Of the rest of the land, 5.4% is settled (buildings or roads) and the remainder (1.7%) is non-productive (rivers, glaciers or mountains).

The municipality also includes the hamlets of Ettenhausen, portions of Billikon and Brünggen as well as the Fabriksiedlung or cloth manufacturing settlement of Mühlau an der Töss.

[6] The historical population is given in the following table:[3] Sennhof-Kyburg railway station is a stop of the Zürich S-Bahn service S26.