The Subnational Government Structure and Finance Dashboard displays comparable graphs on the institutional organisation and public finance at subnational government level for 38 OECD member countries. The graphs show the averages – weighted – for unitary and federal countries as well as the average for the European Union and OECD for 2022 (depending on data availability).
This section includes graphs on municipalities by population class size. You may find the full dataset here: Municipal level government by population size.