Principle
Verifiability
Every major data point, chart or research statement should have a clearly stated source so that visitors can verify the origin of the information.
Sources · methodology · transparency
Sources and Methodology
Demographic data has public value only when it is understandable, verifiable and placed within a clear methodological framework. This page explains the sources on which the Institute’s research work is based.
Research foundation
The principles behind research credibility
The research part of the website is based on publicly available demographic data, official statistical sources and professional analyses by national and international institutions.
Principle
Clarity
Data is presented clearly and transparently, without unnecessary technical language where it is not needed.
Principle
No sensationalism
The Institute’s purpose is to explain long-term trends, not to provide political interpretation, alarmism or simplified public messaging.
National sources
Slovenian data foundations
• Statistical Office of the Republic of Slovenia (SURS / SiStat)
• Institute of Macroeconomic Analysis and Development (IMAD / UMAR)
• ZRC SAZU and other research institutions
• publicly available municipal and state institutional data
International sources
European comparative framework
• Eurostat and the EUROPOP2023 database
• comparative European demographic indicators
• publicly available international statistical sources where needed for comparisons between Slovenia and the European Union
Data is presented through time series, comparative charts, municipal overviews and thematic analyses. Trend periods are used to understand change over time, rather than focusing only on a single year.
Population projections are treated as scenarios of future development, not definitive forecasts. They depend on assumptions about fertility, mortality, migration and the age structure of the population.
Methodology
How data is processed
The demographic indicators use core statistical concepts: population, live births, deaths, natural increase, immigration, emigration, net migration, total fertility rate and population age structure.
Limitations
Why context matters
Demographic data may be updated, corrected or methodologically adjusted. International comparisons require attention to publication delays, methodological differences and statistical classifications.
Related documents
Research documents
Key documents supporting the research-based understanding of Slovenia’s demographic trends.
Major Collection of Demographic Research
A comprehensive overview of key demographic data, municipal indicators and projections.
Open PDFDemographic Data of Slovenia 2008–2024
A visual presentation of key indicators for Slovenia in the 2008–2024 period.
Open PDFIMAD: Fertility Indicators
Professional analysis of fertility in Slovenia and comparison with the European context.
Open PDFTransparency is the foundation of trust.
The research part of the website will continue to be expanded with new data, reports and thematic analyses.