Municipality Kranj, which is part of the Gorenjska statistical region, measures 151 km2; this ranks it 39th among Slovene municipalities.
Statistical data for 2012 reveal the following:
In the middle of 2012 about 55,450 people (about 27,400 men and 28,050 women) were living in the municipality, which ranks Kranj 3th among Slovene municipalities. The population density was 367 people per square kilometre, which was higher 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 3.7 (in Slovenia 1.3). 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 -2.4. The sum of natural increase and net migration per 1,000 population in the municipality was positive. It was 1.3 (in Slovenia 1.6).
The mean age of people in Kranj was 41.3 years, which was lower than the national average (42).
As in most Slovene municipalities, in Kranj the number of old people was higher than the number of young people: there were 110 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 Kranj 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 Kranj – as in most Slovene municipalities – more women were 65+ years old than 14 or less; for men the situation was exactly the opposite.
Kranj had 27 kindergartens. They were attended by 2,269 children or 69% of all children aged 1–5, which was less than the national average of 75%. In the school year 2012/2013 basic schools in Kranj were attended by about 4,600 pupils, while various upper secondary schools were attended by about 2,090 pupils. There were 50 students and 10 graduates per 1,000 people in the municipality; in Slovenia the averages were 47 per 1,000 and 10 per 1,000, respectively.
Among people aged 15–64 (i.e. working age population) about 59% were persons in employment (i.e. persons in paid employment or self-employed persons), which is more than the national average of 57%.
The registered unemployment rate was 10.3%, which is less than the national average (12%). As in most Slovene municipalities, more women than men were unemployed.
In Kranj, average monthly gross earnings per person employed by legal persons were about 3% higher than the annual average of monthly earnings for Slovenia; and net earnings about 4% higher.
In 2012, there were 377 dwellings per 1,000 population. About 60% of dwellings had at least three rooms. Average size of dwellings in the municipality was 80 m2.
Every other person in Kranj had a car (51 passenger cars per 100 population); cars in this municipality were on average 9 years old.
In 2012, 336 kg of municipal waste per person was collected in Kranj, which is 9 kg more than on average in Slovenia.