Municipality Jezersko, which is part of the Gorenjska statistical region, measures 69 km2; this ranks it 101st among Slovene municipalities.
Statistical data for 2011 reveal the following:
In the middle of 2011 about 650 people (about 350 men and 300 women) were living in the municipality, which ranks Jezersko 205th among Slovene municipalities. The population density was 10 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 municipality was negative. It was -10.6 (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 -25.8. The sum of natural increase and net migration per 1,000 population in the municipality was negative. It was -36.4 (in Slovenia 2.6).
The mean age of people in Jezersko was 42.7 years, which was higher than the national average (41.8).
As in most Slovene municipalities, in Jezersko the number of old people was higher than the number of young people: there were 119 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 117. It also shows that the mean age of people in Jezersko 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 Jezersko – as in most Slovene municipalities – more women were 65+ years old than 14 or less; as regards men the same number were 65+ years old as 14 or less.
Jezersko had 1 kindergarten. It was attended by 18 children or 69% of all children aged 1–5, which was less than the national average of 76%. In the school year 2011/2012 basic school in Jezersko was attended by about 30 pupils, while various upper secondary schools were attended by about 20 pupils. There were 70 students and 13 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 58% 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 5.5%, which is less than the national average (11.8%). As in most Slovene municipalities, more women than men were unemployed.
In Jezersko, average monthly gross earnings per person employed by legal persons were about 19% lower than the annual average of monthly earnings for Slovenia; and net earnings about 15% lower.
Every 83rd 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 556 dwellings per 1,000 population. About 62% of dwellings had at least three rooms. Average size of dwellings in the municipality was 81 m2.
About every other person in Jezersko had a car (56 passenger cars per 100 population); cars in this municipality were on average 9 years old.
In 2011, 195 kg of municipal waste per person was collected in Jezersko, which is 157 kg less than on average in Slovenia.