San Diego — UN urban centre population
San Diego has a recorded base population of 1,915,114 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
San Diego UN urban centre: 1,915,114 people (2025), equal to the displayed UN urban centre figure of 1,915,114. Separate GeoNames settlement record: 1,404,452; the UN value is larger (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 San Diego
3 administrative records listed; completeness not established. 3 of 3 population values available; population values and dates not independently verified.
Available-value subtotal: 172,808; not a reconciled total. Shares use the displayed UN urban centre denominator 1,915,114; mixed/unknown dates are not comparable. An em dash means missing, not zero.
| Unit | Population | Share | Membership |
|---|---|---|---|
| Mira Mesa | 70,000 | 3.66% | Not independently verified |
| Rancho Penasquitos | 60,000 | 3.13% | Not independently verified |
| La Jolla | 42,808 | 2.24% | Not independently verified |
Comparable database records
Same definition label: UN urban centre. Dates/boundaries may still differ; this is not a harmonised international city ranking. Ratios use 1,915,114 as denominator.
| Place | Population | vs San Diego |
|---|---|---|
| Lisbon | 1,913,798 | −0.1% |
| Bucharest | 1,909,536 | −0.3% |
| Sialkot | 1,907,978 | −0.4% |
| Beni | 1,923,700 | +0.4% |
| Malang | 1,899,616 | −0.8% |
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 (+0.95% per year). This anchor is a modelling convention, not an observed population date. Tiles, ranks and comparisons use the recorded base figure 1,915,114, 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.