Simi Valley — UN urban centre
Simi Valley: 100,518 people. Reference: 2025 annual estimate · World rank #6,145 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 1635; territory: United States (USA). UN source workbook.
Method: Degree of Urbanisation (contiguous 1 km2 cells, density 1,500+ people/km2, total 50,000+). This is a source-defined urban centre, not a municipality or province. No association with a separate administrative entity is inferred from proximity or name.
Source centroid: 34.2739, -118.7328. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1990 | 76,545 | Estimate |
| 1995 | 79,308 | Estimate |
| 2000 | 82,716 | Estimate |
| 2005 | 88,475 | Estimate |
| 2010 | 91,820 | Estimate |
| 2015 | 96,209 | Estimate |
| 2020 | 99,929 | Estimate |
| 2025 | 100,518 | Estimate |
| 2030 | 104,140 | Projection |
| 2035 | 104,607 | Projection |
| 2040 | 107,712 | Projection |
| 2045 | 107,913 | Projection |
| 2050 | 107,783 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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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.