Neighboring provinces are (from north clockwise) Saraburi, Nakhon Ratchasima, Prachinburi, Chachoengsao, and Pathum Thani.

[5] Khun Dan Prakarn Chon Dam is another tourist attraction 2 hours outside of Bangkok in Nakhon Nayok.

[7] The city of Nakhon Nayok dates back to the Dvaravati Kingdom, probably founded in the 11th century.

Ruins from this time are visible at Mueang Boran Dong Lakhon south of the modern city.

Monsoon season runs from May through October, with heavy rain and somewhat cooler temperatures during the day, although nights remain warm.

[10] The northern part of the province is in the Sankamphaeng Range, the southern prolongation of the Dong Phaya Yen Mountains, with the highest elevation the 1,292-meter-high Yod Khao Kiew.

As of 26 November 2019 there are:[13] one Nakhon Nayok Provincial Administration Organisation (ongkan borihan suan changwat) and 6 municipal (thesaban) areas in the province.

The non-municipal areas are administered by 39 Subdistrict Administrative Organisations - SAO (ongkan borihan suan tambon).