We hereby present the third, brief, informative and thematic publication from the series "Leave No One Behind". The publication has been created with the aim to show the situation with regard to achieving Sustainable Development Goals (SDGs) in the Republic of Serbia from the perspective of spatial differences or inequalities, which are viewed twofold: (1) as differences between the population living in urban and other settlements, and (2) as differences among the population living in regions of the Republic of Serbia.