Municipality Sevnica, which is part of the Spodnjeposavska statistical region, measures 272 km2; this ranks it 12th among Slovene municipalities.
Statistical data for 2009 reveal the following:
In the middle of 2009 about 17,700 people (about 8,900 men and 8,800 women) were living in the municipality, which ranks Sevnica 24th among Slovene municipalities. The population density was 65 people per square kilometre, which was lower than the national average of 101 people per square kilometre.
The number of live births was lower than the number of deaths, which means that natural increase per 1,000 population in the muncipality was negative. It was -4.6 (in Slovenia 1.5). The number of people who moved from the municipality was lower than the number of people who moved into the municipality, so net migration per 1,000 population in the municipality was positive. It was 3.5. The sum of natural increase and net migration per 1,000 population in the municipality was negative. It was -1.1 (in Slovenia 7.2).
The mean age of people in Sevnica was 41.9 years, which was higher than the national average (41.4 years).
As in most Slovene municipalities, in Sevnica the number of old people was higher than the number of young people: there were 124 people, aged 65 or more, per 100 people aged 0–14. This ratio shows that the value of the ageing index was higher than the national average of 118. It also shows that the mean age of people in Sevnica is growing more rapidly than in Slovenia as a whole. Data by sex show that the ageing index for women was in all Slovene municipalities higher than the ageing index for men. In Sevnica – as in most Slovene municipalities – more women were 65+ years old than 14 or less; for men the situation was exactly the opposite.
Sevnica had 7 kindergartens. They were attended by 442 children or 63% of all children aged 1–5, which was less than the national average of 72%. In the school year 2009/10 elementary schools in Sevnica were attended by about 1,500 pupils, while various upper secondary schools were attended by about 760 pupils. There were 60 students and 9 graduates per 1,000 people in the municipality; in Slovenia the averages were 56 per 1,000 and 9 per 1,000, respectively.
Among people aged 15–64 (i.e. working age population) about 62% were persons in employment (i.e. persons in paid employment or self-employed persons), which is more than the national average of 61%.
The registered unemployment rate was 9.2%, which is more than the national average (9.1%). As in most Slovene municipalities, more women than men were unemployed.
In Sevnica, average monthly gross earnings per person employed by legal persons were about 18% lower than the annual average of monthly earnings for Slovenia; and net earnings about 16% lower.
Every 20th person in the municipality was receiving at least one financial social assistance. In Slovenia as a whole every 23rd person received at least one financial social assistance.
The value of gross investment in new fixed assets in the municipality (EUR 1,555 per capita) was lower than the national average (EUR 2,564 per capita).
In 2009, there were 455 dwellings per 1,000 population. About 51% of dwellings had at least three rooms. Average size of dwellings in the municipality was 73 m2.
About every other person in Sevnica had a car (51 passenger cars per 100 population); cars in this municipality were on average 9 years old.
In 2009, 331 kg of municipal waste per person was collected in Sevnica, which is 73 kg less than on average in Slovenia.