[2] Since the opening of Sakudaira Station on the Nagano Shinkansen, many people commute to Tokyo, which is one hour away.

[3] Saku is located in former Shinano Province, and by the Sengoku period it was home to the Ochiai clan,[5] a samurai family that sided with Uesugi Kenshin during his conflict with Takeda Shingen in the 1550s.

(※The town of Mochizuki was once dissolved since March 31, 1889) Per Japanese census data,[7] the population of Saku has remained relatively steady over the past 60 years.

Saku has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 26 members.

The economy of Saku is largely agricultural, with rice, and carp fish farming as major components.