This statistical region of the Posavje hills is the smallest region in the country (264 km2) and has the lowest number of population. At the same time it ranks second in terms of population density.
The natural and geographic features of this region create conditions for industrial activities and more than a third of gross value added is still created by manufacturing, mining and other industry.
In 2010 Zasavska recorded the lowest growth of the registered unemployment rate (less than one percentage point). In the same year the lowest number of sick leave cases was registered (60 per 100 persons in employment); they lasted on average 16.5 days.
In 2010, Zasavska recorded the highest negative annual population growth rate (–10.8‰). The decrease in the number of population was mainly a result of migration to other statistical regions. According to data on dwellings, Zasavska has the smallest dwellings both in terms of size and the number of rooms. This is also evident in the structure of households: at the beginning of 2011 households in Zasavska were the smallest; a third of them were oneperson households. Furthermore, every seventh person living in a one-person household was aged 65 or more. Compared to other regions Zasavska had the largest share of retired persons: namely, every third woman and every fourth man aged 15 or more were retired.