Municipality Mozirje, which is part of the Savinjska statistical region, measures 54 km2; this ranks it 127th among Slovene municipalities.
Statistical data for 2011 reveal the following:
In the middle of 2011 about 4,050 people (about 2,000 men and 2,050 women) were living in the municipality, which ranks Mozirje 122nd among Slovene municipalities. The population density was 76 people per square kilometre, which was lower than the national average of 101 people per square kilometre.
The number of live births was higher than the number of deaths, which means that natural increase per 1,000 population in the municipality was positive. It was 1.5 (in Slovenia 1.6). The number of people who moved from the municipality was higher than the number of people who moved into the municipality, so net migration per 1,000 population in the municipality was negative. It was -3.2. The sum of natural increase and net migration per 1,000 population in the municipality was negative. It was -1.7 (in Slovenia 2.6).
The mean age of people in Mozirje was 41.0 years, which was lower than the national average (41.8).
As in most Slovene municipalities, in Mozirje the number of old people was higher than the number of young people: there were 106 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 117. It also shows that the mean age of people in Mozirje 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 Mozirje – as in most Slovene municipalities – more women were 65+ years old than 14 or less; for men the situation was exactly the opposite.
Mozirje had 1 kindergarten. It was attended by 174 children or 76% of all children aged 1–5, which was the same as the national average. In the school year 2011/2012 basic schools in Mozirje were attended by about 400 pupils, while various upper secondary schools were attended by about 220 pupils. There were 50 students and 12 graduates per 1,000 people in the municipality; in Slovenia the averages were 51 per 1,000 and 10 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 58%.
The registered unemployment rate was 9.3%, which is less than the national average (11.8%). As in most Slovene municipalities, more women than men were unemployed.
In Mozirje, average monthly gross earnings per person employed by legal persons were about 15% lower than the annual average of monthly earnings for Slovenia; and net earnings about 11% lower.
Every 28th person in the municipality was receiving at least one financial social assistance. In Slovenia as a whole every 24th person received at least one financial social assistance.
In 2011, there were 385 dwellings per 1,000 population. About 74% of dwellings had at least three rooms. Average size of dwellings in the municipality was 95 m2.
About every other person in Mozirje had a car (57 passenger cars per 100 population); cars in this municipality were on average 9 years old.
In 2011, 296 kg of municipal waste per person was collected in Mozirje, which is 56 kg less than on average in Slovenia.