Municipality Krško, which is part of the Spodnjeposavska statistical region, measures 287 km2; this ranks it 9th among Slovene municipalities.
Statistical data for 2008 reveal the following:
At the end of 2008 about 25,600 people (about 13,100 men and 12,500 women) were living in the municipality, which ranks Krško 11th among Slovene municipalities. The population density was 89 people per square kilometre, which was lower than the national average of 100 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 municipality was negative. It was -0.1 (in Slovenia 1.7). 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 4.8. The sum of natural increase and net migration per 1,000 population in the municipality was positive. It was 4.7 (in Slovenia 10.9).
The mean age of people in Krško was 41.0 years, which was lower than the national average (41.3 years).
As in most Slovene municipalities, in Krško the number of old people was higher than the number of young people: there were 112 people, aged 65 or more, per 100 people aged 0–14. This ratio shows that the value of the ageing index was lower than the national average of 118. It also shows that the mean age of people in Krško is growing more slowly 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 Krško – as in most Slovene municipalities – more women were 65+ years old than 14 or less; for men the situation was exactly the opposite.
Krško had 13 kindergartens. They were attended by 798 children. Of all children aged 1–5, 68% were included in kindergartens, which was less than the national average of 70%. In the school year 2008/09 elementary schools in Krško were attended by about 2,100 pupils. About 1,200 pupils from the municipality attended various secondary schools. There were 60 students and 9 graduates per 1,000 people in the municipality; in Slovenia the averages were 55 per 1,000 and 8 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 the same as the national average.
The registered unemployment rate was 8.4%, which is more than the national average (6.7%). As in most Slovene municipalities, more women than men were unemployed.
In Krško, average monthly gross earnings per person employed by legal persons were about 4% higher than the annual average of monthly earnings for Slovenia; and net earnings about the same percentage.
Every 21st person in the municipality was receiving at least one financial social assistance. In Slovenia as a whole every 28th person received at least one financial social assistance.
The value of gross investment in new fixed assets in the municipality (EUR 3,548 per capita) was higher than the national average (EUR 3,165 EUR per capita).
In 2008, there were 395 dwellings per 1,000 population. About 49% of dwellings had at least three rooms. Average size of dwellings in the municipality was 74 m2.
About every other person in Krško had a car (55 passenger cars per 100 population); cars in this municipality were on average 9 years old.
In 2008, 461 kg of municipal waste per person was collected in Krško, which is 42 kg more than on average in Slovenia.