Alzira was founded by the Arabs with the name Al-Yazirat Suquar, or Júcar Island. During the Middle Ages, it was a prosperous Moorish trading-station. In 1242, James I of Aragon put control of the town in Spanish hands.
Alzira, located right on the bank of the Júcar, has suffered devastating floods throughout its history – in particular in 1472, 1590, 1864, 1916, 1982 and 1987.
Alzira has historically been a walled town, surrounded by palm, orange and mulberry groves, and by low-lying rice-swamps, which rendered its neighborhood somewhat unhealthy. It is sometimes identified with the Roman Saetabicula.
During the Muslim era, Alzira became a very important town. It even had its very own local government. It was known throughout the region as a cultural hub for writers, philosophers, and law experts.
King Jaime I re-conquered the town for Christianity on the 1242-12-30.
During the 20th century, Alzira changed from an agricultural based economy to a diversified industry-orientated city with an important commercial infrastructure and associated services. Many outstanding companies have their head-office in the city: building and publishing companies, diverse manufactures, textile and ice cream factories, etc. Alzira has become a very important commercial city due to its influence area, which is estimated about 300,000 inhabitants.