This report, prepared for the United Nations Conference on Housing and Sustainable Urban Development (Habitat III), provides an assessment of the state and scope of NUPs across 35 OECD countries.

Cities are not only home to around half of the global population but also major centers of economic activity and innovation. Yet, so far there has been no consensus of what a city really is. Substantial differences in the way cities, metropolitan, urban, and rural areas are defined across countries hinder robust international comparisons and an accurate monitoring of SDGs. The report Cities in the World: A New Perspective on Urbanisation addresses this void and provides new insights on urbanisation by applying for the first time two new definitions of human settlements to the entire globe: the Degree of Urbanisation and the Functional Urban Area.

This report is thus intended as “food for thought” for national, sub-national and municipal governments as they seek to address their economic and environmental challenges through the development and implementation of spatial strategies in pursuit of Green Growth objectives.

In the face of megatrends such as globalisation, climate and demographic change, digitalisation and urbanisation, many cities and regions are grappling with critical challenges to preserve social inclusion, foster economic growth and transition to the low carbon economy. The 17 Sustainable Development Goals (SDGs) set the global agenda for the coming decade to end poverty, protect the planet and ensure prosperity for all. A Territorial Approach to the Sustainable Development Goals argues that cities and regions play a critical role in this paradigm shift and need to embrace the full potential of the SDGs as a policy tool to improve people's lives. The report estimates that at least 105 of the 169 SDG targets will not be reached without proper engagement of sub-national governments. It analyses how cities and regions are increasingly using the SDGs to design and implement their strategies, policies and plans; promote synergies across sectoral domains; and engage stakeholders in policy making. The report proposes an OECD localised indicator framework that measures the distance towards the SDGs for more than 600 regions and 600 cities in OECD and partner countries. The report concludes with a Checklist for Public Action to help policy makers implement a territorial approach to the SDGs.

This report compares urbanisation trends in OECD countries on the basis of a newly defined OECD methodology which enables cross-country comparison of the socio-econimic and environmental performance of metropolitan areas in OECD countries.

This book examines trends in ageing societies and urban development before assessing the impact of ageing populations on urban areas and strategies for policy and governance. It includes 9 case studies.

This report focuses on the urban water management challenges facing cities across OECD countries, and explores both national and local policy responses with respect to water-risk exposure, the state of urban infrastructures and dynamics, and institutional and governance architectures. The analyses focus on four mutually dependent dimensions – finance, innovation, urban-rural co-operation and governance – and proposes a solutions-oriented typology based on urban characteristics. The report underlines that sustainable urban water management will depend on collaboration across different tiers of government working together with local initiatives and stakeholders.