In the population projection, the population differentiated by federal provinces, age, sex and country of birth is projected into the future. Since 2022, the microsimulation model STATSIM is used to compute the projection. To capture the uncertainties of future developments, the population projection is calculated in several scenarios and variants based on different combinations of high, medium and low assumptions for the projection parameters fertility, mortality and migration. The main scenario uses the medium assumption sets. The rounded results are published as web tables (main scenario for Austria and the federal states as well as alternative scenarios and variants for Austria) and STATcube datasets (all scenarios and variants for Austria and the federal states). The results for the alternative scenarios and variants for the federal states are also available as ods-files upon request. The unrounded results are provided in the form of scientific use files for scientific research and teaching purposes. Further data can be requested by e-mail.