Municipality Koper/Capodistria, which is part of the Obalno-kraška statistical region, measures 303 km2; this ranks it 7th among Slovene municipalities.
Statistical data for 2016 reveal the following:
In the middle of 2016 about 51,140 people (about 25,170 men and 25,970 women) were living in the municipality, which ranks Koper/Capodistria 4th among Slovene municipalities. The population density was 169 people per square kilometre, which was higher than the national average 102 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 (in Slovenia 0.3). 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 5.2. The sum of natural increase and net migration per 1,000 population in the municipality was positive. It was 6.2 (in Slovenia 0.8).
The mean age of people in Koper/Capodistria was 43.5 years, which was higher than the national average (42.9).
As in most Slovene municipalities, in Koper/Capodistria the number of old people was higher than the number of young people: there were 133 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 125. It also shows that the mean age of people in Koper/Capodistria 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 Koper/Capodistria – As in most Slovene municipalities – more women were 65+ years old than 14 or less; for men the situation was the same.
In the school year 2016/2017 basic schools in Koper/Capodistria were attended by about 4280 pupils, while various upper secondary schools were attended by about 1590 pupils. There were 31 students and 12 graduates per 1,000 people in the municipality; in Slovenia the averages were 39 per 1,000 and 15 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 national average (60%).
The registered unemployment rate was 9.8%, which is less than the national average (11.2%). As in most Slovene municipalities, more women than men were unemployed.
In Koper/Capodistria, average monthly gross earnings per person employed by legal persons were about 4% higher than the annual average of monthly earnings for Slovenia; and net earnings about 4% higher.
In 2015, there were 447 dwellings per 1,000 population. About 63% of dwellings had at least three rooms. Average size of dwellings in the municipality was 76 m2.
Every other person in Koper had a car (57 passenger cars per 100 population); cars in this municipality were on average 10 years old.
In 2016, 429 kg of municipal waste per person was collected in Koper/Capodistria, which is 82 kg more than on average in Slovenia.