Help improve the data
Have a correction, a better estimate, or additional data—at the global, national, regional, or city level? Send a tip and we'll review it.
We ingest World Bank, UN, and OECD series on a schedule, but national offices often publish country or city updates first. If you spot a new TFR release, census count, migration bulletin, or city figure — or something wrong on a page — tell us, with a link when you have one.
Tips are reviewed by hand. We only add numbers we can verify against an official source. For scheduled releases, see the data release calendar.