Municipality Ribnica, which is part of the Jugovzhodna Slovenija statistical region, measures 154 km2; this ranks it 37th among Slovene municipalities.

Statistical data for 2009 reveal the following:

In the middle of 2009 about 9,300 people (about 4,600 men and 4,700 women) were living in the municipality, which ranks Ribnica 55th among Slovene municipalities. The population density was 61 people per square kilometre, which was lower than the national average of 101 people per square kilometre. 

The number of live births was lower than the number of deaths, which means that natural increase per 1,000 population in the muncipality was negative. It was -1.3 (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 6.7. The sum of natural increase and net migration per 1,000 population in the municipality was positive. It was 5.4 (in Slovenia 7.2).

The mean age of people in Ribnica was 39.9 years, which was lower than the national average (41.4 years). 

As in most Slovene municipalities, in Ribnica the number of old people was higher than the number of young people: there were 105 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 Ribnica 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 Ribnica – as in most Slovene municipalities – more women were 65+ years old than 14 or less; for men the situation was exactly the opposite.

Ribnica had 1 kindergarten. It was attended by 293 children or 66% of all children aged 1–5, which was less than the national average of 72%. In the school year 2009/10 elementary schools in Ribnica were attended by about 820 pupils, while various upper secondary schools were attended by about 470 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 62% 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 6.8%, which is less than the national average (9.1%). In contrast to most Slovene municipalities, more men than women were unemployed.

In Ribnica, average monthly gross earnings per person employed by legal persons were about 16% lower than the annual average of monthly earnings for Slovenia; and net earnings about 12% lower.

Every 51st 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 540 per capita) was lower than the national average (EUR 2,564 per capita). 

In 2009, there were 376 dwellings per 1,000 population. About 60% of dwellings had at least three rooms. Average size of dwellings in the municipality was 87 m2.

Every other person in Ribnica had a car (49 passenger cars per 100 population); cars in this municipality were on average 8 years old.

In 2009, 241 kg of municipal waste per person was collected in Ribnica, which is 163 kg less than on average in Slovenia.