Hrastnik municipality is a part of the Zasavje development region. It extends on 59 km2. According to the area the Hrastnik municipality ranks 118th place among all the Slovenian municipalities.
 
The last available statistical data reveal the following image of the municipality Hrastnik:

• In the year 2024 the municipality had about 8.871 inhabitants (4.429 men and 4.442 women). On a square kilometre of the municipality area lived an average of 153 inhabitants. So the population density in the municipality is higher than in the whole Slovenia (105 inhabitants per km2).
• The number of live births was lower than the number of deaths. Natural increase per 1000 inhabitants was negative, -8,9 (in whole Slovenia -2,1). The number of those who have moved out of the municipality, was lower than the number of people who have moved into the municipality. In the year 2023 net migration per 1.000 inhabitants in the municipality was negative, amounted to -5,7. The sum of natural increase and net migration per 1.000 inhabitants in the municipality was negative, -3,2 (in Slovenia 3,3).
• In the year 2023 the average age of residents was 47,2 years, higher than the average age of people in Slovenia (44,1 years).
• The data for the year 2023 shows that among the municipality residents the number of elderly - as in the majority of Slovenian municipalities – was higher than the number of young people: per 100 people aged 0 to 14 years lived 210 people, aged 65 or more. This ratio shows that the value of the municipalities aging index is higher than the value of the Slovenian aging index (which was 145). It also shows that the average age of municipality inhabitants rises, on average, faster than in Slovenia. Data by gender shows that the value of the aging index for women in all Slovenian municipalities is higher than the value of the aging index for men. In the municipality is – as in the majority of Slovenian municipalities – among women more women which were aged 65 years or more, than women who were aged less than 15 years; among men the picture is similar.
• The data for the year 2023 show that in the municipality 3 kindergartens are operating and are attended by 257 children. Of all the children, aged 1 – 5 years, in the municipality, 80 % of them attend kindergarten, which is less than in all Slovenian kindergartens together (83%). The local elementary schools in the school year 2023/2024 educated about 700 pupils. Various secondary schools were attended by about 310 pupils. Among 1.000 inhabitants of the municipality there were on average 28 students and 7 graduates; in Slovenia there were among 1.000 inhabitants on average 38 students and 8 graduates.
• The data for the year 2023 show that among people aged 15 to 64 years (ie. Working age population) approximately 66 % are employed or self-employed (ie. Employment), which is less than the Slovenian average (69 %).
• The data for the year 2023 show that average monthly salary (gross earnings) per person, employed by legal persons, were in the municipality about 5 % lower than the annual average monthly salary (gross earnings) in Slovenia and in net earnings about 4 %.
• The data for the year 2023 show that every second person in the municipality had a car (543 cars per 1000 inhabitants); the cars were on average 11 years old.
• During the year 2023 the municipality collected 321 kg of municipal waste per capita, which is 57 kg less than the Slovenian average.

Source: http://www.stat.si