The city came in 1381 with the reign Haigerloch to the Habsburgs, the fief passed it in the 15th century to the lords of Weitingen.

Imnau had inhabitants: In 1700, the physician Samuel Caspar discovered small pots source in the valley of the Eyach.

In 1905, the Apollo-source was taken in by the family Imnau Pope, which was sold to Commerce Carl Haegele in the following year.

Rudolf I, a brother-in-law of Albert II Von Hohenberg-Haigerloch, awarded the town charter to Haigerloch before 1231.

In this period, the present castle complex was built on the Schlossberg as the residence of the counts of Hohenzollern-Haigerloch, replacing the former high-medieval structure.

[3] In the local council election of 13 June 2004, the result was: Haigerloch lies on the Ferienstraße (holiday road) and on the Hohenzollernstraße.