[1][2] Uthong was one of the largest known city-states that emerged around the plains of central Thailand in the first millennium but became abandoned around 1000 AD due to the endemic and lost in major trading cities status.

[1] O. W. Wolters speculated that Mueang Uthong was the center of Chen Li Fu, an ancient kingdom mentioned in the Chinese text Sung Hui Yao Kao in 1200 and 1205,[5]: 20  while Paul Wheatley posited that the site in question was the city-state of Chin Lin, the kingdom King Fan Man of Funan endeavored to annex during the 4th century.

A copper inscription from the mid-7th century states, "Sri Harshavarman, grandson of Ishanavarman, having expanded his sphere of glory, obtained the lion throne through regular succession," and mentions gifts to a linga.

[7] Paul Wheatley suggests that the city-state of "Jinlin" which was mentioned in the Chinese archives of the Liang dynasty as the last state that was occupied by Fan Man, the Great King of Funan Kingdom, in the 4th century AD, might be located in the area of Uthong, since the word "Jinlin" means land of gold or Suvarnabhumi; as mentioned in the archive, it was a state located approximately 2,000 li (800 kilometers) west of the Funan Kingdom, which corresponded to the area of Uthong.

[12] Since the Nam Chorakhe Suphan River was dried up in places, shallow, and consequently not navigable, and also due to some pandemics, Uthong lost its influence as the port city and was abandoned around the 11th century, thus escaping from the Khmer influence that came to the most significant power in the 12th century during the reign of the great Khmer king, Jayavarman VII.

However, after Ayutthaya was sacked by troops of the Burmese Konbaung dynasty in 1767, both Suphan Buri as a frontier town and the surrounding settlements was destroyed and left abandoned.