SF actually has a tiny homeless population compared to NY or LA, at least in number. But they're much more concentrated around the high-traffic Union Sq / Tende

SF actually has a tiny homeless population compared to NY or LA, at least in number. But they're much more concentrated around the high-traffic Union Sq / Tenderloin area than most cities, and you also tend to cross paths with them more if you drive less. LA, by comparison, has a much bigger homeless population but you rarely see them when you live there, because they're spread out and you tend to drive by them rather than walking.