CSA is highly urbanised, and the vast majority of the region's poor live in urban areas , while urban extreme poverty is becoming more pronounced , with those living in informal settlements and working within informal economy being critical factors in each city's economy . Many households in the region's cities live in precarious neighbourhoods with insufficient infrastructure and substandard housing . On average, between 21% and 25% of urban populations live in informal settlements . This hides important disparities: Habitat III reports, by individual countries, the percentage of urban population living in informal settlements, which ranged from 5% to 60% and in absolute terms means 105 million people living in precarious conditions  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report