Municipality Novo mesto, which is part of the Jugovzhodna Slovenija statistical region, measures 236 km2; this ranks it 20th among Slovene municipalities.
Statistical data for 2009 reveal the following:
In the middle of 2009 about 35,800 people (about 17,900 men and 17,900 women) were living in the municipality, which ranks Novo mesto 6th among Slovene municipalities. The population density was 152 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 muncipality was positive. It was 2.0 (in Slovenia 1.5). 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 9.0. The sum of natural increase and net migration per 1,000 population in the municipality was positive. It was 11.0 (in Slovenia 7.2).
The mean age of people in Novo mesto was 40.0 years, which was lower than the national average (41.4 years).
In contrast to most Slovene municipalities, in Novo mesto the number of old people was the same as the number of young people: there were 100 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 Novo mesto 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 Novo mesto – as in most Slovene municipalities – more women were 65+ years old than 14 or less; for men the situation was exactly the opposite.
Novo mesto had 16 kindergartens. They were attended by 1,497 children or 73% of all children aged 1–5, which was more than the national average of 72%. In the school year 2009/10 elementary schools in Novo mesto were attended by about 3,100 pupils, while various upper secondary schools were attended by about 1,700 pupils. There were 60 students and 10 graduates per 1,000 people in the municipality; in Slovenia the averages were 56 per 1,000 and 9 per 1,000, respectively.
Among people aged 15–64 (i.e. working age population) about 64% were persons in employment (i.e. persons in paid employment or self-employed persons), which is more than the national average of 61%.
The registered unemployment rate was 7.0%, which is less than the national average (9.1%). As in most Slovene municipalities, more women than men were unemployed.
In Novo mesto, average monthly gross earnings per person employed by legal persons were about 10% higher than the annual average of monthly earnings for Slovenia; and net earnings about the same percentage.
Every 30th person in the municipality was receiving at least one financial social assistance. In Slovenia as a whole every 23rd person received at least one financial social assistance.
The value of gross investment in new fixed assets in the municipality (EUR 4,667 per capita) was higher than the national average (EUR 2,564 per capita).
In 2009, there were 401 dwellings per 1,000 population. About 50% of dwellings had at least three rooms. Average size of dwellings in the municipality was 76 m2.
About every other person in Novo mesto had a car (57 passenger cars per 100 population); cars in this municipality were on average 7 years old.
In 2009, 441 kg of municipal waste per person was collected in Novo mesto, which is 37 kg more than on average in Slovenia.