Gonzales is a city in Ascension Parish, Louisiana, United States. As of the 2010 census, it had a population of 9,781.Known as the  Jambalaya Capital of the World, it is famous for its annual Jambalaya Festival, which was first held in 1968.he railroad assisted in the growth of Gonzales. When the Louisiana Railway and Navigation Company (LR&N) constructed its rail line through the area, there was already a local post office named Gonzales.