When Sambas Regency was originally created, it consisted of the ten districts of Bengkayang, Ledo,
Pemangkat,
Sambas, Samalantan,
Sanggau Ledo,
Singkawang, Sungai Raya, Seluas and Teluk Keramat. In 1956, a new district named Selakau was established by splitting off from the northern part of Singkawang District. In 1958, two new districts were cut out from Pemangkat District, namely Jawai (from the northern part) and Tebas (from the eastern part). In 1963, another two districts were established (Paloh District was split off from the northern part of Teluk Keramat District, and Sejangkung District was split off from the northeastern part of Sambas District). On 12 December 1981, when Singkawang became an administrative city within the regency, it was split into three separate districts, namely Roban, Pasiran and Tujuhbelas. On 17 June 1996,
Sajingan Besar District was established by splitting off from the five villages of three different districts (two from Sejangkung, two from Teluk Keramat, and one from Paloh) and
Jagoi Babang (from the northern part of Seluas district). After
Bengkayang Regency was established in 1999, the southern districts (including the administrative city of Singkawang), became part of that newly-created regency. In 2001, two new districts were established (Galing District was split off from the eastern part of Teluk Keramat District, and Subah District was split off from the southern part of Sambas District). In 2003, another two districts were established (Semparuk District was split off from the eastern part of Pemangkat District, and Tekarang District was split off from the northern part of Tebas District). In 2004, three new districts were established (Sebawi District and Sajad District were cut out from the western and eastern parts of Sambas District respectively, and South Jawai District was cut out from the southern part of Jawai District). In 2006, a new district named Tangaran was carved out from the western part of Teluk Keramat District. A year later, two more districts were established (Selakau Timur District was split off from the eastern part of Selakau District and Salatiga District was split off from the southern part of Pemangkat District). Sambas Regency thus now consists of nineteen
districts (
kecamatan), tabulated below with their areas and their populations at the 2010 census and the 2020 census, and the official estimates as at mid 2025. The table also includes the locations of the district administrative centres, the number of
administrative villages in each district (all classed as rural
desa), and its post code. ==List of Sambas Regents and Vice Regents==