From 2000 to 2017, the percentage of the global access-deficit population who resides in Central and Southern Asia changed only a little, being still slightly more than one-third. Meanwhile, the proportion in Sub-Saharan Africa increased from approximately one-fifth to almost one-third of the total; the proportion residing in Eastern and Southeastern Asia decreased by 6 percentage points. At the current pace of change in both access and population, in 2030 around 40% of the access-deficit population will reside in Sub-Saharan Africa.