The average house in Riverdale Chicago is worth less than the average car in Silicon Vally. People there make less money from armed robbery than someone can shoplift from a Silicon Valley Apple store. So shockingly with different risk/reward payoffs you get more property crime instead of armed robbery.
SF property crime: 57.01/1000
SF median home: $1,195,367
SF per-capita income: $64k
NYC property crime: 18.64/1000
NYC median home: $1,126,049
NYC per-capita income: $73k
Palo Alto property crime: 22.88/1000
Palo Alto median home: $2,363,833
Palo Alto per-capita income: $89k
Chicago property crime: 32.48/1000
Chicago median home: $272,043
Chicago per-capita income: $34k
So SF has worse property crime even though it is on-par or poorer than NYC and Palo Alto.
But, if you’re confusing the point, clearly median income isn’t the only factor. Palo Alto is 2,712.65/sq mi where San Francisco is 18,790.74/sq mi. It’s over the hump where you don’t get poor people begging etc. Similarly, manhattan effectively segregates the rich an poor in a way that San Francisco doesn’t, but wealth very much is a factor when comparing San Francisco to similar areas.