Nonthaburi is one of the central provinces (changwat) of Thailand, established by the Act Establishing Changwat Samut Prakan, Changwat Nonthaburi, Changwat Samut Sakhon and Changwat Nakhon Nayok, Buddhist Era 2489 (1946), which came into force as from March 9, 1946.
Neighboring provinces are (from north clockwise) Phra Nakhon Si Ayutthaya, Pathum Thani, Bangkok and Nakhon Pathom. A province in central Thailand. This is an area in the outskirts of Bangkok. Has the area's 75 largest countries (including Bangkok), but the most densely populated and second largest after Bangkok