Olcnava

The municipality lies at an altitude of 411 metres (1,348 ft)^[2] and covers an area of 15.21 km² (5.87 sq mi) (2025).^[5]

It has a population of 1012 people (31 December 2025).^[7]

In year 2021 was 1040 people by ethnicity 971 as Slovak, 68 as Not found out, 18 as Romani, 10 as Rusyn, 4 as Other, 2 as Czech, 2 as Polish, 2 as English, 1 as Ukrainian, 1 as Serbian, 1 as German and 1 as Hungarian.

Note on population: The difference between the population numbers above and in the census (here and below) is that the population numbers above are mostly made up of permanent residents, etc.; and the census should indicate the place where people actually mainly live.
For example, a student is a citizen of a village because they have permanent residence there (they lived there as a child and has parents), but most of the time he studies at a university in the city.

In year 2021 was 1040 people by religion 820 from Roman Catholic Church, 92 from Not found out, 84 from None, 17 from Greek Catholic Church, 12 from Evangelical Church, 4 from Ad hoc movements, 3 from Calvinist Church, 3 from Eastern Orthodox Church, 3 from Jehovah's Witnesses, 1 from Other and 1 from Baptists Church.