Phra Nakhon Si Ayutthaya Province

The province is traversed by the Lopburi and Pa Sak rivers, which historically made it one of Thailand's most productive rice-farming regions. Beyond the celebrated ruins of Ayutthaya city, the province is home to the Bang Pa-In Royal Palace, a popular royal retreat set on an island in the Chao Phraya River. With a population of approximately 822,720 residents (2024), it ranks 30th among Thai provinces by population. Manufacturing now dominates the economy, accounting for over 61 percent of gross provincial product, with major automobile factories operating in the province. The province is divided into sixteen districts and borders Ang Thong, Lopburi, Saraburi, Pathum Thani, Nonthaburi, Nakhon Pathom and Suphan Buri.