Marquelia is a municipality in the Mexican state of Guerrero. The municipal seat lies at Marquelia. In 2005, the municipality had a population of 1…Marquelia is a municipality in the Mexican state of Guerrero. The municipal seat lies at Marquelia. In 2005, the municipality had a population of 11,801. By 2020, it had risen to 14,280. The municipality of Marquelia was created from sections of Azoyú and Cuajinicuilapa in 2001.