District location in Nakhon Pathom Province
|o Total||249.347 km2 (96.273 sq mi)|
|o Density||837.53/km2 (2,169.2/sq mi)|
|Time zone||UTC+7 (ICT)|
The district was established in 1896, then named Talat Mai District. It was renamed Sam Phran in 1917.
The district was the site of the Kader Toy Factory fire in 1993, the worst industrial factory fire in history. The factory was owned by the Charoen Pokphand (CP) Group, a Thai transnational corporation and one of Asia's largest agribusiness firms.
The district is elongated in an east-west direction and neighbouring districts are (from the north clockwise) Mueang Nakhon Pathom, Nakhon Chai Si, and Phutthamonthon of Nakhon Pathom Province, Thawi Watthana District and Nong Khaem of Bangkok, Krathum Baen and Ban Phaeo of Samut Sakhon Province, and Bang Phae of Ratchaburi Province.
The main water resource of the district is the large Tha Chin River or Nakhon Chai Si River which meanders through the district in a southeasterly direction.
The Tha Kham Sub-district (usually written Takham), is the centre of the Roman Catholic Christian religion in Thailand. Michael Michai Kitbunchu, Cardinal of Thailand, was born in Sam Phran and many Catholic religious institutes have their convents, monasteries, and headquarters in the area as well as Thailand's major seminary. The largest and most important installation in the Catholic enclave of Tha Kham is the campus shared by Joseph Upatham School, one of the largest combined kindergarten, primary, and secondary schools in the country. It is one of the 43 schools and colleges governed by the Education Department of Bangkok Archdiocese (EDBA). The Ban Phu Waan Pastoral Training Centre, a leading Catholic conference and convention centre is also here. There are several other large private schools in Tak Kham including St. Peter's school (mixed gender, grades K-9) also governed by the EDBA in the parish of St. Peter, and Marie Upatham, an independent Catholic school for girls in the Tha Kham village of Mor Sii.
Sam Phran is the site of the National Police Academy and numerous other colleges including St. Joseph Intertechnology College, a Catholic vocational school and teacher training centre also governed by the EDBA.
The district is divided into 16 sub-districts (tambons), which are further subdivided into 137 villages (mubans). Sam Phran is a town (thesaban mueang) and Om Yai a sub-district municipality (thesaban tambon). There are a further 15 tambon administrative organizations (TAO).