Sa Kaeo became a province in 1993, when the six districts Sa Kaeo, Khlong Hat, Wang Nam Yen, Aranya Prathet, Ta Phraya and Watthana Nakhon of Prachin Buri were elevated to provincial status. It is thus one of the three youngest provinces of Thailand, together with Amnat Charoen and Nong Bua Lam Phu.