Alverca do Ribatejo (Portuguese pronunciation: [aɫˈvɛɾkɐ ðu ʁiβɐˈtɛʒu]) is a city (cidade) and a former civil parish in the municipality of Vila Franca de Xira, Portugal. In 2013, the parish merged into the new parish Alverca do Ribatejo e Sobralinho.It covers an area of 17.89 square kilometres (6.91 sq mi) and as of 2011 had a population of 31,070, making it the largest city in the municipality of Vila Franca de Xira.