Municipality Domžale, which is part of the Osrednjeslovenska statistical region, measures 72 km2; this ranks it 97th among Slovene municipalities.
Statistical data for 2012 reveal the following:
In the middle of 2012 about 34,350 people (about 16,900 men and 17,450 women) were living in the municipality, which ranks Domžale 7th among Slovene municipalities. The population density was 475 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 4.9 (in Slovenia 1.3). 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 2. The sum of natural increase and net migration per 1,000 population in the municipality was positive. It was 6.9 (in Slovenia 1.6).
The mean age of people in Domžale was 39.7 years, which was lower than the national average (42).
In contrast to most Slovene municipalities, in Domžale the number of young people was higher than the number of old people: there were 87 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 Domžale 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 Domžale – as in most Slovene municipalities – more women were 65+ years old than 14 or less; for men the situation was exactly the opposite.
Domžale had 16 kindergartens. They were attended by 1,527 children or 73% of all children aged 1–5, which was less than the national average of 75%. In the school year 2012/2013 basic schools in Domžale were attended by about 3,340 pupils, while various upper secondary schools were attended by about 1,420 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 61% 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 8.7%, which is less than the national average (12%). In contrast to most Slovene municipalities, more men than women were unemployed.
In Domžale, average monthly gross earnings per person employed by legal persons were about 4% lower than the annual average of monthly earnings for Slovenia; and net earnings about 3% lower.
In 2012, there were 357 dwellings per 1,000 population. About 66% of dwellings had at least three rooms. Average size of dwellings in the municipality was 87 m2.
About every other person in Domžale had a car (53 passenger cars per 100 population); cars in this municipality were on average 8 years old.
In 2012, 404 kg of municipal waste per person was collected in Domžale, which is 77 kg more than on average in Slovenia.