Reyhanlı is a municipality and district of Hatay Province, Turkey. Its area is 367 km², and its population is 108,092. It is near the country's border …Reyhanlı is a municipality and district of Hatay Province, Turkey. Its area is 367 km², and its population is 108,092. It is near the country's border with Syria. Formerly known as İrtah and Ar-Rayhaniya, Its southernmost environ, Yenişehir, is thought to be near the ancient village of Imma, involved in the Battle of Immae in 272 and probably also with the so-called Battle of Antioch of 218.