The district office was on the east bank of the Chao Phraya River.

The office was moved to Tambon Parok, on the west bank of the river, in 1917.

Neighboring districts are (from the west clockwise): Lat Lum Kaeo, Sam Khok, Khlong Luang, Thanyaburi, and Lam Luk Ka of Pathum Thani Province; Don Mueang of Bangkok; and Pak Kret of Nonthaburi province.

The district is divided into 14 sub-districts (tambons), which are further subdivided into 81 villages (mubans).

There are twelve tambon administrative organizations (TAO) responsible for the non-municipal areas.