Municipality Šentilj, which is part of the Podravska statistical region, measures 65 km2; this ranks it 105th among Slovene municipalities.
Statistical data for 2012 reveal the following:
In the middle of 2012 about 8,450 people (about 4,200 men and 4,250 women) were living in the municipality, which ranks Šentilj 62th among Slovene municipalities. The population density was 130 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 1.2 (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 4.4. The sum of natural increase and net migration per 1,000 population in the municipality was positive. It was 5.6 (in Slovenia 1.6).
The mean age of people in Šentilj was 42.1 years, which was higher than the national average (42).
As in most Slovene municipalities, in Šentilj the number of old people was higher than the number of young people: there were 118 people, aged 65 or more, per 100 people aged 0–14. This ratio shows that the value of the ageing index was the same as the national average. It also shows that the mean age of people in Šentilj is growing as fast as 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 Šentilj – as in most Slovene municipalities – more women were 65+ years old than 14 or less; for men the situation was exactly the opposite.
Šentilj had 4 kindergartens. They were attended by 248 children or 74% of all children aged 1–5, which was less than the national average of 75%. In the school year 2012/2013 basic schools in Šentilj were attended by about 620 pupils, while various upper secondary schools were attended by about 300 pupils. There were 40 students and 8 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 52% were persons in employment (i.e. persons in paid employment or self-employed persons), which is less than the national average of 57%.
The registered unemployment rate was 14.0%, which is more than the national average (12%). As in most Slovene municipalities, more women than men were unemployed.
In Šentilj, average monthly gross earnings per person employed by legal persons were about 15% lower than the annual average of monthly earnings for Slovenia; and net earnings about 12% lower.
In 2012, there were 377 dwellings per 1,000 population. About 70% of dwellings had at least three rooms. Average size of dwellings in the municipality was 87 m2.
About every other person in Šentilj had a car (51 passenger cars per 100 population); cars in this municipality were on average 9 years old.
In 2012, 274 kg of municipal waste per person was collected in Šentilj, which is 53 kg less than on average in Slovenia.