The place name "Moriguchi" first appears in historical records in 1373. In the Edo Period, Moriguchi-juku was a post station on the Ōsaka Kaidō, an extension of the Tōkaidō between Kyoto and Kōraibashi in Osaka. The town of Moriguchi was established within Matta District with the creation of the modern municipalities system on April 1, 1889.
The name "Moriguchi" first appeared in historical records in 1373. During the Edo Period, it served as a post station on the Ōsaka Kaidō, an extension of the Tōkaidō between Kyoto and Kōraibashi in Osaka. The town of Moriguchi was established within Matta District with the implementation of the modern municipalities system on April 1, 1889.