Read what city means in the source
The United Nations World Urbanization Prospects 2025 methodology uses a harmonised Degree of Urbanization approach alongside information based on national definitions. Its glossary describes an urban agglomeration as a continuous urban area extending beyond administrative boundaries. These concepts need not match a municipality’s legal limits.
Statistics Canada likewise distinguishes municipalities from census metropolitan areas, which can include adjacent municipalities integrated around a core. A familiar city name can therefore label different statistical areas.
Match the population and date
Look for whether the figure is a census count, an estimate or a projection. Record the reference year, not just the documentary’s release date. A later programme can reuse an older census figure, and a projection describes a modelled future rather than a completed count.
If two figures differ, first compare boundaries and dates. Do not treat the larger number as automatically more current or more accurate. A metropolitan figure can be larger because it covers more territory, not because the municipality suddenly gained those residents.
Also distinguish people resident in the area from visitors, commuters or a daytime population. A busy station scene does not establish the residential population used in a ranking.
Make a fair comparison
For a cross-country comparison, use one documented dataset and the same geographical definition where possible. If national definitions differ, make that limitation explicit. For a local discussion, use the relevant national statistical authority’s geography and map rather than assuming a television outline matches it.
Save the area name, geographic type, year, population measure and source link. A useful note says that the programme compares metropolitan populations for a stated year, rather than simply calling one place larger. This preserves the distinction between a statistical claim and a travel impression, and prevents a municipal count from being placed beside another country’s much broader urban-region estimate as if the units were identical.
A boundary revision can also change a count without representing migration. Read any comparability note before describing a numerical increase as growth within an unchanged area, especially when comparing two census editions.
Related questions
Is a metropolitan area always one municipality?
No. It can include several adjacent municipalities.
Does the programme’s release year date its population figure?
No. Check the statistic’s own reference date.
Sources and scope
Scope notes distinguish published documentation, supplied information and editorial methods. They do not report a hands-on service test.
- UN World Urbanization Prospects methodology — Current source distinguishes harmonised approach and national definitions.
- UN WUP glossary — Defines urban agglomeration and related statistical concepts.
- Statistics Canada: subprovincial estimation methods — Current definition of CMA/CA and municipality distinctions.
