During the reign of King Prasat Thong, a canal was dug to create a shortcut for the flow of the Chao Phraya.

In 1665 King Narai built a fortress, as the shorter river course was giving enemies an easier route to the capital, Ayutthaya.

The provincial seal shows earthenware, a traditional product of Nonthaburi.

Nonthaburi is a province where the Chao Phraya River crosses from north to south, and on the ground, the Chao Phraya giant catfish (Pangasius sanitwongsei) is the provincial aquatic life.

The provincial slogan translates to "Grand royal mansion, renowned Suan Somdet, Ko Kret's pottery, famous ancient temples, tasty durians, and the beautiful government office".

[8] There are six groups of Nonthaburi durian which are Kop, Luang, Kan Yao, Kampan, Thong Yoi, and miscellaneous.

As of 8 September 2020 there are: one Nonthaburi Provincial Administrative Organization - PAO (ongkan borihan suan changwat) and twenty-two municipal (thesaban) areas in the province.

The capital Nonthaburi and Pak Kret have city (thesaban nakhon) status.

[2] The non-municipal areas are administered by 23 Subdistrict Administrative Organizations - SAO (ongkan borihan suan tambon).