Punjab is a province of Pakistan. With a population of over 127 million, it is the most populous Pakistani province and the second most populous subnational polity in the world. Located in the central-eastern region of the country, it has the largest economy, contributing the most to national GDP in Pakistan. Lahore is the capital and largest city of the province. Other major cities include Faisalabad, Rawalpindi, Gujranwala and Multan.