What to report
Identify the affected URL and value, label, boundary or explanation. Include an authoritative source, its publication date and the exact change you recommend. A direct public contact channel is being finalized.
How reports are reviewed
We compare the report with the stated source and methodology. A difference is not automatically an error: country area may vary with coastline resolution, water treatment, disputed boundaries or overseas territories.
How changes are published
Confirmed factual errors are corrected as soon as practical. Material methodology or source changes are reflected in the relevant page, source notes and dataset generation date. Boundary displays remain visualization choices and do not state a legal position.
See the methodology and data sources before submitting a report.