Ottawa — UN urban centre population
Ottawa has a recorded base population of 605,121 for the UN urban centre definition (2025 annual estimate). UN DESA, World Urbanization Prospects 2025; the moving counter uses UN 2025–2026 annual growth, not new population observations.
At a glance
Separate UN urban-centre definition
Ottawa UN urban centre: 605,121 people (2025), equal to the displayed UN urban centre figure of 605,121. Separate GeoNames settlement record: 1,017,449; the UN value is smaller (different boundaries; GeoNames population date unavailable). UN WUP 2025 Degree of Urbanisation; not a municipal/province boundary. Association: name/country/coordinates matched; boundary relationship unverified. No containment claim is made.
Administrative units of Ottawa
2 administrative records listed; completeness not established. 2 of 2 population values available; population values and dates not independently verified.
Available-value subtotal: 38,742; not a reconciled total. Shares use the displayed UN urban centre denominator 605,121; mixed/unknown dates are not comparable. An em dash means missing, not zero.
| Unit | Population | Share | Membership |
|---|---|---|---|
| Centretown | 25,687 | 4.24% | Not independently verified |
| The Glebe | 13,055 | 2.16% | Not independently verified |
Recorded localities
Gazetteer associations; boundary membership not independently verified.
Ottawa South (125,090)
Comparable database records
Same definition label: UN urban centre. Dates/boundaries may still differ; this is not a harmonised international city ranking. Ratios use 605,121 as denominator.
| Place | Population | vs Ottawa |
|---|---|---|
| Anqiu | 605,324 | +0.0% |
| Zhangjiakou | 606,124 | +0.2% |
| Tampico | 603,035 | −0.3% |
| Bihār Sharīf | 607,401 | +0.4% |
| Pereira | 602,831 | −0.4% |
About these numbers
Source: UN DESA, World Urbanization Prospects 2025. Reference: 2025 annual estimate. Live method: exponential projection from modelling anchor 2025-01-01 using UN 2025–2026 annual growth (+0.59% per year). This anchor is a modelling convention, not an observed population date. Tiles, ranks and comparisons use the recorded base figure 605,121, not the ticking estimate. Country/world denominators are World Bank values and can differ in date and method from local/UN values. Ranks cover only records with the same definition label in this database, not all cities in the world.
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This page is a structured reference entry. Its sources, geographic definition and reference dates determine what the figures mean; it is not independent reporting about the causes of change. Read the accompanying explanation before comparing different places or vintages.