Rillo de Gallo is a municipality located in the province of Guadalajara, Castile-La Mancha, Spain. According to the 2004 census, the municiā¦Rillo de Gallo is a municipality located in the province of Guadalajara, Castile-La Mancha, Spain. According to the 2004 census, the municipality has a population of 74 inhabitants. The heraldic shield of Rillo de Gallo was approved by Decree 138/87 of the Community of Castilla-La Mancha on the 27th of October. The shield is split into three parts. The first of three main symbols is a golden rooster is on an azure background on the top left of the shield. A simple elm tree is displayed on the top right with a greyish background. A silver axe is the third of the three symbols, shown at the bottom with an azure background.