In 1896 when the Northeastern Railway was built and passed by Tambon Pak Phriao, the governor of Saraburi, Phraya Phichai Ronnarong Songkhram moved the capital district from Sao Hai district to the area.

The district is divided into 11 sub-districts (tambons), which are further subdivided into 77 villages (mubans).

The town (thesaban mueang) Saraburi covers the whole tambon Pak Phriao.

Kut Nok Plao and Takut are two recently created townships.

Missing numbers are tambons which now form the Chaloem Phra Kiat District