Originally named Ao Udom became a sanitation (Sukhaphiban) on 12 December 1967, which covered parts of subdistricts Thung Sukhla and Surasak, Si Racha district, Chonburi province.

On 24 December 1991 the area has been enlarged again and contains five subdistricts, Surasak, Nong Kham, Bueng, Bo Win and Kha Khan Song.

The status was upgraded to Chaophraya Surasak city municipality (thesaban nakhon) on 9 April 2013, effectively on 1 May 2013, while the total area was reduced from 306.44 to 276.98 square kilometres (118.32 to 106.94 sq mi).

[2] Chaophraya Surasak city municipality (thesaban nakhon) with a total area of 276.98 km2 is located on the east coast of Gulf of Thailand.

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

The administration of Chaophraya Surasak city municipality is responsible for an area that covers 276.98 square kilometres (106.94 sq mi) and consists of five subdistricts, 29 villages (muban), 46 communities (chumchon),[7] 153,687 people in 107,539 households.

[10] There are eight health promoting hospitals; Surasak 1, Bueng 2, Nong Kham 2, Bo Win 1, Khao Khan Song 2.

"Si Racha District Waterworks Office" produced 47,000 cub.m./day tapwater, which is used by 30,100 households or 30% of the total area in the municipality.

"Laem Chabang Waterworks Office" produced 59,140 cub.m/day tapwater, which is used by 36,400 households or 13% of the total area in the municipality.