- Projection of total population 2022-2050 (Luxembourg: 2022-2047) - Territorial entities: arrondissements (Wallonie), départements (Lorraine), Grand-Duché (Luxembourg), Kreise (Saarland, Rheinland-Pfalz) - Statistical data sources: Destatis, Eurostat, Statbel, STATEC, Statistisches Amt Saarland, Statistisches Landesamt Rheinland-Pfalz. Calculations: OIE/IBA 2022 - Geodata sources: ACT Luxembourg 2017, IGN France 2017, GeoBasis-DE / BKG 2017, NGI-Belgium 2017. Harmonization: SIG-GR / GIS-GR 2022

- Share of the working age population (20-64 years) in total population 2021 (Lorraine: 2019) - Territorial entities: arrondissements (Lorraine, Wallonie), Grand Duchy (Luxembourg), Kreise (Saarland, Rheinland-Pfalz) - Statistical data sources: Destatis; INSEE; Statbel, STATEC. Calculations: OIE/IBA 2022 - Geodata sources: ACT Luxembourg 2017, IGN France 2017, GeoBasis-DE / BKG 2017, NGI-Belgium 2017. Harmonization: SIG-GR / GIS-GR 2022

- Change in working age population (20-64 years) 2000-2023 (Lorraine: 1999-2021) - Territorial entities: arrondissements (Lorraine, Wallonie), Grand Duchy (Luxembourg), Kreise (Saarland, Rheinland-Pfalz) - Statistical data sources: Destatis, INSEE, Statbel, STATEC. Calculations: OIE/IBA 2024 - Geodata sources: ACT Luxembourg, IGN France, GeoBasis-DE / BKG, NGI-Belgium. Harmonization: SIG-GR / GIS-GR 2024

- Number of under 20-year-olds in 2016 - Share of under 20-year-olds in the total population 2016 (Lorraine: 2014, Luxembourg: 2017) - Territorial entities: arrondissements (Wallonie), cantons (Lorraine, Luxembourg), Kreise (Saarland, Rheinland-Pfalz) - Statistical data sources: INSEE Grand Est, Statistisches Landesamt Rheinland-Pfalz, Statistisches Amt Saarland, STATEC, IWEPS. Calculations: LISER 2018 - Geodata sources: ACT Luxembourg 2017, IGN France 2017, GeoBasis-DE / BKG 2017, NGI-Belgium 2017. Harmonization: SIG-GR / GIS-GR 2018

- Population density 2016 (inhabitants per km²) per municipality - Statistical data sources: INSEE Grand Est, IWEPS, Statistisches Landesamt Rheinland-Pfalz, Statistisches Amt Saarland, STATEC. Harmonization: LISER 2018 - Geodata sources: ACT Luxembourg 2017, IGN France 2017, GeoBasis-DE / BKG 2017, NGI-Belgium 2017. Harmonization: SIG-GR / GIS-GR 2018

- Change in total population 2000-2017, Lorraine: 1999-2015 - Territorial entities: arrondissements (Wallonie), zones d'emploi (Lorraine), cantons (Luxembourg), Kreise (Saarland, Rheinland-Pfalz) - Statistical data sources: INSEE Grand Est; DG Statistique - Statistics Belgium; Statistisches Landesamt Rheinland-Pfalz; Statistisches Amt Saarland; STATEC. Calculations: OIE/IBA 2018 - Geodata sources: ACT Luxembourg 2017, IGN France 2017, GeoBasis-DE / BKG 2017, NGI-Belgium 2017. Harmonization: SIG-GR / GIS-GR 2018

Memorial sites of the Greater Region in 2021 - Sources: Interreg project "Land of Memory", https://www.landofmemory.eu/en

Tourist sites illustrated on the tourist map of the Greater Region (2020 edition) - Sources: Interreg project "Digital tourism marketing for the Greater Region", https://tourismus-grossregion.eu

- Number of nights spent and nights/population ratio in 2022 - Territorial level: NUTS 2 - Sources: Eurostat - European Commission 2023, EuroGeographics. Harmonization: GIS-GR

- Number of nights spent and nights/population ratio in 2016 - Territorial level: NUTS 2 - Sources: Eurostat - European Commission 2016, EuroGeographics 2013. Harmonization: Lepur - ULiège