Area - 26.265 km2 (10.141 sq mi)
Population - 153,668
Chom Thong was part of Bang Khun Thien district until an announcement on 9 November 1989. On 14 October 1997, parts of Bang Pakok sub-district of Rat Burana and parts of Bukkhalo sub-district of Thon Buri were transferred to Chom Thong during the administrative reform which rearranged the 38 Bangkok districts into 50 districts.
Wat Ratcha-orasaram (วัดราชโอรสาราม), originally called Wat Chom Thong dated back to Ayuthaya period, was renamed to its present-day title when it became the royal temple of King Nangklao. The temple is unique because of the blending of Chinese architecture style into Thai buddhist temple.
Wat Sai (วัดไทร) is another old temple from Ayuthaya kingdom. It belongs to the Mahayana branch of Buddhism. The nearby Wat Sai floating market was once a busy and lively floating market where farmers came and sold products on boat. The original market disappeared around 1977 now it is very small and only targets tourists.
Wat Nangnong Worawihan (วัดนางนองวรวิหาร), also from Ayuthaya period, was renovated by King Nangklao. Among the highlights include mother-of-pearl inlaid ubosot panels and the mixed of Thai, Chinese and European style in its architectures.
- The district is served byBangkok Skytrain Wutthakat Station located at Chom Thong and Thon Buri district boundary.