San Diego, the state's second-most populous county, had a population of 3,336,081 persons in fiscal year 2025.
San Diego, the state's second-most populous county, had a population of 3,336,081 persons in fiscal year 2025, an increase of 0.32% over 2024's figure.
Sneak peek at upcoming San Diego-area street fairs, festivals, concerts, performances, art shows, library events, community meetings and more ...
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